From 767f5029da013291625abd7bac0a8bbc900ef204 Mon Sep 17 00:00:00 2001
From: krahets <krahets@163.com>
Date: Fri, 22 Dec 2023 02:57:23 +0800
Subject: [PATCH] build

---
 docs-en/index.assets/btn_chinese_edition.svg      | 2 +-
 docs-en/index.assets/btn_chinese_edition_dark.svg | 2 +-
 docs-en/index.assets/btn_download_pdf.svg         | 2 +-
 docs-en/index.assets/btn_download_pdf_dark.svg    | 2 +-
 docs-en/index.assets/btn_read_online.svg          | 2 +-
 docs-en/index.assets/btn_read_online_dark.svg     | 2 +-
 docs/chapter_array_and_linkedlist/linked_list.md  | 5 +++--
 docs/index.assets/btn_download_pdf.svg            | 2 +-
 docs/index.assets/btn_download_pdf_dark.svg       | 2 +-
 docs/index.assets/btn_english_edition.svg         | 2 +-
 docs/index.assets/btn_english_edition_dark.svg    | 2 +-
 docs/index.assets/btn_read_online.svg             | 2 +-
 docs/index.assets/btn_read_online_dark.svg        | 2 +-
 13 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/docs-en/index.assets/btn_chinese_edition.svg b/docs-en/index.assets/btn_chinese_edition.svg
index f8a4b21d7..9f069e89c 100644
--- a/docs-en/index.assets/btn_chinese_edition.svg
+++ b/docs-en/index.assets/btn_chinese_edition.svg
@@ -1 +1 @@
-<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-3437 -1242)"><g><path d="M3438 1313C3438 1276 3468 1246 3505 1246L3726 1246C3763 1246 3793 1276 3793 1313 3793 1350 3763 1380 3726 1380L3505 1380C3468 1380 3438 1350 3438 1313Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="46" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 3606.97 1329)">中文版</text><g><g><g><path d="M0 17.2C0 12.4566 3.85656 8.59999 8.59999 8.59999L34.4 8.59999 40.85 8.59999 43 8.59999 77.3999 8.59999C82.1434 8.59999 85.9999 12.4566 85.9999 17.2L85.9999 51.6C85.9999 56.3434 82.1434 60.2 77.3999 60.2L43 60.2 40.85 60.2 34.4 60.2 8.59999 60.2C3.85656 60.2 0 56.3434 0 51.6L0 17.2ZM43 17.2 43 51.6 77.3999 51.6 77.3999 17.2 43 17.2ZM23.959 23.6365C23.529 22.669 22.5615 22.0375 21.5 22.0375 20.4384 22.0375 19.4709 22.669 19.0409 23.6365L10.4409 42.9865C9.83624 44.3437 10.4544 45.9293 11.8116 46.534 13.1687 47.1387 14.7544 46.5206 15.3591 45.1634L16.555 42.4625 26.445 42.4625 27.6409 45.1634C28.2456 46.5206 29.8312 47.1253 31.1884 46.534 32.5456 45.9428 33.1503 44.3437 32.559 42.9865L23.959 23.6365ZM21.5 31.3362 24.0531 37.0875 18.9469 37.0875 21.5 31.3362ZM60.2 22.0375C61.6781 22.0375 62.8875 23.2469 62.8875 24.725L62.8875 25.2625 68.7999 25.2625 70.95 25.2625C72.4281 25.2625 73.6374 26.4719 73.6374 27.95 73.6374 29.4281 72.4281 30.6375 70.95 30.6375L70.6812 30.6375 70.4662 31.2422C69.2703 34.5209 67.4562 37.504 65.145 40.0303 65.2659 40.1109 65.3868 40.1781 65.5078 40.2453L68.0474 41.7637C69.324 42.5297 69.7271 44.1825 68.9746 45.4456 68.2221 46.7087 66.5559 47.1253 65.2928 46.3728L62.7531 44.8543C62.1484 44.4915 61.5706 44.1153 60.9928 43.7122 59.5684 44.72 58.05 45.5934 56.424 46.319L55.9403 46.534C54.5831 47.1387 52.9975 46.5206 52.3928 45.1634 51.7881 43.8062 52.4062 42.2206 53.7634 41.6159L54.2472 41.4009C55.1071 41.0112 55.9403 40.5812 56.7331 40.084L55.0937 38.4447C54.0456 37.3965 54.0456 35.69 55.0937 34.6418 56.1418 33.5937 57.8484 33.5937 58.8965 34.6418L60.8584 36.6037 60.9256 36.6709C62.5918 34.9106 63.949 32.8681 64.93 30.624L60.2 30.624 50.525 30.624C49.0468 30.624 47.8375 29.4147 47.8375 27.9365 47.8375 26.4584 49.0468 25.249 50.525 25.249L57.5125 25.249 57.5125 24.7115C57.5125 23.2334 58.7218 22.024 60.2 22.024Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00291 3499 1278)"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-3437 -1242)"><g><path d="M3438 1313C3438 1276 3468 1246 3505 1246L3726 1246C3763 1246 3793 1276 3793 1313L3793 1313C3793 1350 3763 1380 3726 1380L3505 1380C3468 1380 3438 1350 3438 1313Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="46" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 3606.97 1329)">中文版</text><g><g><g><path d="M0 17.2C0 12.4566 3.85656 8.59999 8.59999 8.59999L34.4 8.59999 40.85 8.59999 43 8.59999 77.3999 8.59999C82.1434 8.59999 85.9999 12.4566 85.9999 17.2L85.9999 51.6C85.9999 56.3434 82.1434 60.2 77.3999 60.2L43 60.2 40.85 60.2 34.4 60.2 8.59999 60.2C3.85656 60.2 0 56.3434 0 51.6L0 17.2ZM43 17.2 43 51.6 77.3999 51.6 77.3999 17.2 43 17.2ZM23.959 23.6365C23.529 22.669 22.5615 22.0375 21.5 22.0375 20.4384 22.0375 19.4709 22.669 19.0409 23.6365L10.4409 42.9865C9.83624 44.3437 10.4544 45.9293 11.8116 46.534 13.1687 47.1387 14.7544 46.5206 15.3591 45.1634L16.555 42.4625 26.445 42.4625 27.6409 45.1634C28.2456 46.5206 29.8312 47.1253 31.1884 46.534 32.5456 45.9428 33.1503 44.3437 32.559 42.9865L23.959 23.6365ZM21.5 31.3362 24.0531 37.0875 18.9469 37.0875 21.5 31.3362ZM60.2 22.0375C61.6781 22.0375 62.8875 23.2469 62.8875 24.725L62.8875 25.2625 68.7999 25.2625 70.95 25.2625C72.4281 25.2625 73.6374 26.4719 73.6374 27.95 73.6374 29.4281 72.4281 30.6375 70.95 30.6375L70.6812 30.6375 70.4662 31.2422C69.2703 34.5209 67.4562 37.504 65.145 40.0303 65.2659 40.1109 65.3868 40.1781 65.5078 40.2453L68.0474 41.7637C69.324 42.5297 69.7271 44.1825 68.9746 45.4456 68.2221 46.7087 66.5559 47.1253 65.2928 46.3728L62.7531 44.8543C62.1484 44.4915 61.5706 44.1153 60.9928 43.7122 59.5684 44.72 58.05 45.5934 56.424 46.319L55.9403 46.534C54.5831 47.1387 52.9975 46.5206 52.3928 45.1634 51.7881 43.8062 52.4062 42.2206 53.7634 41.6159L54.2472 41.4009C55.1071 41.0112 55.9403 40.5812 56.7331 40.084L55.0937 38.4447C54.0456 37.3965 54.0456 35.69 55.0937 34.6418 56.1418 33.5937 57.8484 33.5937 58.8965 34.6418L60.8584 36.6037 60.9256 36.6709C62.5918 34.9106 63.949 32.8681 64.93 30.624L60.2 30.624 50.525 30.624C49.0468 30.624 47.8375 29.4147 47.8375 27.9365 47.8375 26.4584 49.0468 25.249 50.525 25.249L57.5125 25.249 57.5125 24.7115C57.5125 23.2334 58.7218 22.024 60.2 22.024Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00291 3499 1278)"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs-en/index.assets/btn_chinese_edition_dark.svg b/docs-en/index.assets/btn_chinese_edition_dark.svg
index e96c12f38..c9ed76940 100644
--- a/docs-en/index.assets/btn_chinese_edition_dark.svg
+++ b/docs-en/index.assets/btn_chinese_edition_dark.svg
@@ -1 +1 @@
-<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-2699 -1242)"><g><path d="M2702 1313C2702 1276 2732 1246 2769 1246L2989 1246C3026 1246 3056 1276 3056 1313 3056 1350 3026 1380 2989 1380L2769 1380C2732 1380 2702 1350 2702 1313Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="46" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2870.4 1329)">中文版</text><g><g><g><path d="M0 17.2C0 12.4566 3.85656 8.59999 8.59999 8.59999L34.4 8.59999 40.85 8.59999 43 8.59999 77.3999 8.59999C82.1434 8.59999 85.9999 12.4566 85.9999 17.2L85.9999 51.6C85.9999 56.3434 82.1434 60.2 77.3999 60.2L43 60.2 40.85 60.2 34.4 60.2 8.59999 60.2C3.85656 60.2 0 56.3434 0 51.6L0 17.2ZM43 17.2 43 51.6 77.3999 51.6 77.3999 17.2 43 17.2ZM23.959 23.6365C23.529 22.669 22.5615 22.0375 21.5 22.0375 20.4384 22.0375 19.4709 22.669 19.0409 23.6365L10.4409 42.9865C9.83624 44.3437 10.4544 45.9293 11.8116 46.534 13.1687 47.1387 14.7544 46.5206 15.3591 45.1634L16.555 42.4625 26.445 42.4625 27.6409 45.1634C28.2456 46.5206 29.8312 47.1253 31.1884 46.534 32.5456 45.9428 33.1503 44.3437 32.559 42.9865L23.959 23.6365ZM21.5 31.3362 24.0531 37.0875 18.9469 37.0875 21.5 31.3362ZM60.2 22.0375C61.6781 22.0375 62.8875 23.2469 62.8875 24.725L62.8875 25.2625 68.7999 25.2625 70.95 25.2625C72.4281 25.2625 73.6374 26.4719 73.6374 27.95 73.6374 29.4281 72.4281 30.6375 70.95 30.6375L70.6812 30.6375 70.4662 31.2422C69.2703 34.5209 67.4562 37.504 65.145 40.0303 65.2659 40.1109 65.3868 40.1781 65.5078 40.2453L68.0474 41.7637C69.324 42.5297 69.7271 44.1825 68.9746 45.4456 68.2221 46.7087 66.5559 47.1253 65.2928 46.3728L62.7531 44.8543C62.1484 44.4915 61.5706 44.1153 60.9928 43.7122 59.5684 44.72 58.05 45.5934 56.424 46.319L55.9403 46.534C54.5831 47.1387 52.9975 46.5206 52.3928 45.1634 51.7881 43.8062 52.4062 42.2206 53.7634 41.6159L54.2472 41.4009C55.1071 41.0112 55.9403 40.5812 56.7331 40.084L55.0937 38.4447C54.0456 37.3965 54.0456 35.69 55.0937 34.6418 56.1418 33.5937 57.8484 33.5937 58.8965 34.6418L60.8584 36.6037 60.9256 36.6709C62.5918 34.9106 63.949 32.8681 64.93 30.624L60.2 30.624 50.525 30.624C49.0468 30.624 47.8375 29.4147 47.8375 27.9365 47.8375 26.4584 49.0468 25.249 50.525 25.249L57.5125 25.249 57.5125 24.7115C57.5125 23.2334 58.7218 22.024 60.2 22.024Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00291 2762 1278)"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-2699 -1242)"><g><path d="M2702 1313C2702 1276 2732 1246 2769 1246L2989 1246C3026 1246 3056 1276 3056 1313 3056 1350 3026 1380 2989 1380L2769 1380C2732 1380 2702 1350 2702 1313Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="46" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2870.4 1329)">中文版</text><g><g><g><path d="M0 17.2C0 12.4566 3.85656 8.59999 8.59999 8.59999L34.4 8.59999 40.85 8.59999 43 8.59999 77.3999 8.59999C82.1434 8.59999 85.9999 12.4566 85.9999 17.2L85.9999 51.6C85.9999 56.3434 82.1434 60.2 77.3999 60.2L43 60.2 40.85 60.2 34.4 60.2 8.59999 60.2C3.85656 60.2 0 56.3434 0 51.6L0 17.2ZM43 17.2 43 51.6 77.3999 51.6 77.3999 17.2 43 17.2ZM23.959 23.6365C23.529 22.669 22.5615 22.0375 21.5 22.0375 20.4384 22.0375 19.4709 22.669 19.0409 23.6365L10.4409 42.9865C9.83624 44.3437 10.4544 45.9293 11.8116 46.534 13.1687 47.1387 14.7544 46.5206 15.3591 45.1634L16.555 42.4625 26.445 42.4625 27.6409 45.1634C28.2456 46.5206 29.8312 47.1253 31.1884 46.534 32.5456 45.9428 33.1503 44.3437 32.559 42.9865L23.959 23.6365ZM21.5 31.3362 24.0531 37.0875 18.9469 37.0875 21.5 31.3362ZM60.2 22.0375C61.6781 22.0375 62.8875 23.2469 62.8875 24.725L62.8875 25.2625 68.7999 25.2625 70.95 25.2625C72.4281 25.2625 73.6374 26.4719 73.6374 27.95 73.6374 29.4281 72.4281 30.6375 70.95 30.6375L70.6812 30.6375 70.4662 31.2422C69.2703 34.5209 67.4562 37.504 65.145 40.0303 65.2659 40.1109 65.3868 40.1781 65.5078 40.2453L68.0474 41.7637C69.324 42.5297 69.7271 44.1825 68.9746 45.4456 68.2221 46.7087 66.5559 47.1253 65.2928 46.3728L62.7531 44.8543C62.1484 44.4915 61.5706 44.1153 60.9928 43.7122 59.5684 44.72 58.05 45.5934 56.424 46.319L55.9403 46.534C54.5831 47.1387 52.9975 46.5206 52.3928 45.1634 51.7881 43.8062 52.4062 42.2206 53.7634 41.6159L54.2472 41.4009C55.1071 41.0112 55.9403 40.5812 56.7331 40.084L55.0937 38.4447C54.0456 37.3965 54.0456 35.69 55.0937 34.6418 56.1418 33.5937 57.8484 33.5937 58.8965 34.6418L60.8584 36.6037 60.9256 36.6709C62.5918 34.9106 63.949 32.8681 64.93 30.624L60.2 30.624 50.525 30.624C49.0468 30.624 47.8375 29.4147 47.8375 27.9365 47.8375 26.4584 49.0468 25.249 50.525 25.249L57.5125 25.249 57.5125 24.7115C57.5125 23.2334 58.7218 22.024 60.2 22.024Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00291 2762 1278)"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs-en/index.assets/btn_download_pdf.svg b/docs-en/index.assets/btn_download_pdf.svg
index e486da953..ed236a077 100644
--- a/docs-en/index.assets/btn_download_pdf.svg
+++ b/docs-en/index.assets/btn_download_pdf.svg
@@ -1 +1 @@
-<svg width="358" height="138" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-3437 -838)"><g><path d="M3438 907C3438 869.997 3468 840 3505 840L3726 840C3763 840 3793 869.997 3793 907 3793 944.004 3763 974.001 3726 974.001L3505 974.001C3468 974.001 3438 944.004 3438 907Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 3629.6 924)">PDF</text><g><g><g><path d="M3515 882.125C3515 877.644 3518.64 874 3523.12 874L3543.44 874 3543.44 890.25C3543.44 892.497 3545.25 894.313 3547.5 894.313L3563.75 894.313 3563.75 912.594 3537.34 912.594C3532.86 912.594 3529.22 916.237 3529.22 920.719L3529.22 939 3523.12 939C3518.64 939 3515 935.357 3515 930.875L3515 882.125ZM3563.75 890.25 3547.5 890.25 3547.5 874 3563.75 890.25ZM3537.34 918.688 3541.41 918.688C3545.33 918.688 3548.52 921.874 3548.52 925.797 3548.52 929.72 3545.33 932.906 3541.41 932.906L3539.38 932.906 3539.38 936.969C3539.38 938.086 3538.46 939 3537.34 939 3536.23 939 3535.31 938.086 3535.31 936.969L3535.31 930.875 3535.31 920.719C3535.31 919.602 3536.23 918.688 3537.34 918.688ZM3541.41 928.844C3543.09 928.844 3544.45 927.486 3544.45 925.797 3544.45 924.109 3543.09 922.75 3541.41 922.75L3539.38 922.75 3539.38 928.844 3541.41 928.844ZM3553.59 918.688 3557.66 918.688C3561.02 918.688 3563.75 921.417 3563.75 924.781L3563.75 932.906C3563.75 936.271 3561.02 939 3557.66 939L3553.59 939C3552.48 939 3551.56 938.086 3551.56 936.969L3551.56 920.719C3551.56 919.602 3552.48 918.688 3553.59 918.688ZM3557.66 934.938C3558.77 934.938 3559.69 934.024 3559.69 932.906L3559.69 924.781C3559.69 923.664 3558.77 922.75 3557.66 922.75L3555.62 922.75 3555.62 934.938 3557.66 934.938ZM3567.81 920.719C3567.81 919.602 3568.73 918.688 3569.84 918.688L3575.94 918.688C3577.05 918.688 3577.97 919.602 3577.97 920.719 3577.97 921.836 3577.05 922.75 3575.94 922.75L3571.88 922.75 3571.88 926.813 3575.94 926.813C3577.05 926.813 3577.97 927.727 3577.97 928.844 3577.97 929.961 3577.05 930.875 3575.94 930.875L3571.88 930.875 3571.88 936.969C3571.88 938.086 3570.96 939 3569.84 939 3568.73 939 3567.81 938.086 3567.81 936.969L3567.81 928.844 3567.81 920.719Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-3437 -838)"><g><path d="M3438 907C3438 869.997 3468 840 3505 840L3726 840C3763 840 3793 869.997 3793 907L3793 907C3793 944.004 3763 974.001 3726 974.001L3505 974C3468 974 3438 944.003 3438 907Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 3630.75 924)">PDF</text><g><g><g><path d="M3515 882.125C3515 877.644 3518.64 874 3523.12 874L3543.44 874 3543.44 890.25C3543.44 892.497 3545.25 894.313 3547.5 894.313L3563.75 894.313 3563.75 912.594 3537.34 912.594C3532.86 912.594 3529.22 916.237 3529.22 920.719L3529.22 939 3523.12 939C3518.64 939 3515 935.357 3515 930.875L3515 882.125ZM3563.75 890.25 3547.5 890.25 3547.5 874 3563.75 890.25ZM3537.34 918.688 3541.41 918.688C3545.33 918.688 3548.52 921.874 3548.52 925.797 3548.52 929.72 3545.33 932.906 3541.41 932.906L3539.38 932.906 3539.38 936.969C3539.38 938.086 3538.46 939 3537.34 939 3536.23 939 3535.31 938.086 3535.31 936.969L3535.31 930.875 3535.31 920.719C3535.31 919.602 3536.23 918.688 3537.34 918.688ZM3541.41 928.844C3543.09 928.844 3544.45 927.486 3544.45 925.797 3544.45 924.109 3543.09 922.75 3541.41 922.75L3539.38 922.75 3539.38 928.844 3541.41 928.844ZM3553.59 918.688 3557.66 918.688C3561.02 918.688 3563.75 921.417 3563.75 924.781L3563.75 932.906C3563.75 936.271 3561.02 939 3557.66 939L3553.59 939C3552.48 939 3551.56 938.086 3551.56 936.969L3551.56 920.719C3551.56 919.602 3552.48 918.688 3553.59 918.688ZM3557.66 934.938C3558.77 934.938 3559.69 934.024 3559.69 932.906L3559.69 924.781C3559.69 923.664 3558.77 922.75 3557.66 922.75L3555.62 922.75 3555.62 934.938 3557.66 934.938ZM3567.81 920.719C3567.81 919.602 3568.73 918.688 3569.84 918.688L3575.94 918.688C3577.05 918.688 3577.97 919.602 3577.97 920.719 3577.97 921.836 3577.05 922.75 3575.94 922.75L3571.88 922.75 3571.88 926.813 3575.94 926.813C3577.05 926.813 3577.97 927.727 3577.97 928.844 3577.97 929.961 3577.05 930.875 3575.94 930.875L3571.88 930.875 3571.88 936.969C3571.88 938.086 3570.96 939 3569.84 939 3568.73 939 3567.81 938.086 3567.81 936.969L3567.81 928.844 3567.81 920.719Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs-en/index.assets/btn_download_pdf_dark.svg b/docs-en/index.assets/btn_download_pdf_dark.svg
index 99266fde5..308cfeda0 100644
--- a/docs-en/index.assets/btn_download_pdf_dark.svg
+++ b/docs-en/index.assets/btn_download_pdf_dark.svg
@@ -1 +1 @@
-<svg width="358" height="138" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-2699 -838)"><g><path d="M2702 907C2702 869.997 2732 840 2769 840L2989 840C3026 840 3056 869.997 3056 907 3056 944.003 3026 974 2989 974L2769 974C2732 974 2702 944.003 2702 907Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2893.03 924)">PDF</text><g><g><g><path d="M2779 882.125C2779 877.644 2782.64 874 2787.12 874L2807.44 874 2807.44 890.25C2807.44 892.497 2809.25 894.313 2811.5 894.313L2827.75 894.313 2827.75 912.594 2801.34 912.594C2796.86 912.594 2793.22 916.237 2793.22 920.719L2793.22 939 2787.12 939C2782.64 939 2779 935.357 2779 930.875L2779 882.125ZM2827.75 890.25 2811.5 890.25 2811.5 874 2827.75 890.25ZM2801.34 918.688 2805.41 918.688C2809.33 918.688 2812.52 921.874 2812.52 925.797 2812.52 929.72 2809.33 932.906 2805.41 932.906L2803.37 932.906 2803.37 936.969C2803.37 938.086 2802.46 939 2801.34 939 2800.23 939 2799.31 938.086 2799.31 936.969L2799.31 930.875 2799.31 920.719C2799.31 919.602 2800.23 918.688 2801.34 918.688ZM2805.41 928.844C2807.09 928.844 2808.45 927.486 2808.45 925.797 2808.45 924.109 2807.09 922.75 2805.41 922.75L2803.37 922.75 2803.37 928.844 2805.41 928.844ZM2817.59 918.688 2821.66 918.688C2825.02 918.688 2827.75 921.417 2827.75 924.781L2827.75 932.906C2827.75 936.271 2825.02 939 2821.66 939L2817.59 939C2816.48 939 2815.56 938.086 2815.56 936.969L2815.56 920.719C2815.56 919.602 2816.48 918.688 2817.59 918.688ZM2821.66 934.938C2822.77 934.938 2823.69 934.024 2823.69 932.906L2823.69 924.781C2823.69 923.664 2822.77 922.75 2821.66 922.75L2819.62 922.75 2819.62 934.938 2821.66 934.938ZM2831.81 920.719C2831.81 919.602 2832.73 918.688 2833.84 918.688L2839.94 918.688C2841.05 918.688 2841.97 919.602 2841.97 920.719 2841.97 921.836 2841.05 922.75 2839.94 922.75L2835.87 922.75 2835.87 926.813 2839.94 926.813C2841.05 926.813 2841.97 927.727 2841.97 928.844 2841.97 929.961 2841.05 930.875 2839.94 930.875L2835.87 930.875 2835.87 936.969C2835.87 938.086 2834.96 939 2833.84 939 2832.73 939 2831.81 938.086 2831.81 936.969L2831.81 928.844 2831.81 920.719Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-2699 -838)"><g><path d="M2702 907C2702 869.997 2732 840 2769 840L2989 840C3026 840 3056 869.997 3056 907 3056 944.003 3026 974 2989 974L2769 974C2732 974 2702 944.003 2702 907Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2894.18 924)">PDF</text><g><g><g><path d="M2779 882.125C2779 877.644 2782.64 874 2787.12 874L2807.44 874 2807.44 890.25C2807.44 892.497 2809.25 894.313 2811.5 894.313L2827.75 894.313 2827.75 912.594 2801.34 912.594C2796.86 912.594 2793.22 916.237 2793.22 920.719L2793.22 939 2787.12 939C2782.64 939 2779 935.357 2779 930.875L2779 882.125ZM2827.75 890.25 2811.5 890.25 2811.5 874 2827.75 890.25ZM2801.34 918.688 2805.41 918.688C2809.33 918.688 2812.52 921.874 2812.52 925.797 2812.52 929.72 2809.33 932.906 2805.41 932.906L2803.37 932.906 2803.37 936.969C2803.37 938.086 2802.46 939 2801.34 939 2800.23 939 2799.31 938.086 2799.31 936.969L2799.31 930.875 2799.31 920.719C2799.31 919.602 2800.23 918.688 2801.34 918.688ZM2805.41 928.844C2807.09 928.844 2808.45 927.486 2808.45 925.797 2808.45 924.109 2807.09 922.75 2805.41 922.75L2803.37 922.75 2803.37 928.844 2805.41 928.844ZM2817.59 918.688 2821.66 918.688C2825.02 918.688 2827.75 921.417 2827.75 924.781L2827.75 932.906C2827.75 936.271 2825.02 939 2821.66 939L2817.59 939C2816.48 939 2815.56 938.086 2815.56 936.969L2815.56 920.719C2815.56 919.602 2816.48 918.688 2817.59 918.688ZM2821.66 934.938C2822.77 934.938 2823.69 934.024 2823.69 932.906L2823.69 924.781C2823.69 923.664 2822.77 922.75 2821.66 922.75L2819.62 922.75 2819.62 934.938 2821.66 934.938ZM2831.81 920.719C2831.81 919.602 2832.73 918.688 2833.84 918.688L2839.94 918.688C2841.05 918.688 2841.97 919.602 2841.97 920.719 2841.97 921.836 2841.05 922.75 2839.94 922.75L2835.87 922.75 2835.87 926.813 2839.94 926.813C2841.05 926.813 2841.97 927.727 2841.97 928.844 2841.97 929.961 2841.05 930.875 2839.94 930.875L2835.87 930.875 2835.87 936.969C2835.87 938.086 2834.96 939 2833.84 939 2832.73 939 2831.81 938.086 2831.81 936.969L2831.81 928.844 2831.81 920.719Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs-en/index.assets/btn_read_online.svg b/docs-en/index.assets/btn_read_online.svg
index ba1d2c684..a2500e44f 100644
--- a/docs-en/index.assets/btn_read_online.svg
+++ b/docs-en/index.assets/btn_read_online.svg
@@ -1 +1 @@
-<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><defs><clipPath id="clip0"><rect x="3501" y="672" width="82" height="65"/></clipPath><clipPath id="clip1"><rect x="3501" y="672" width="82" height="65"/></clipPath><clipPath id="clip2"><rect x="3501" y="672" width="82" height="65"/></clipPath></defs><g transform="translate(-3437 -632)"><g><path d="M3438 704C3438 666.997 3468 637 3505 637L3726 637C3763 637 3793 666.997 3793 704 3793 741.003 3763 771 3726 771L3505 771C3468 771 3438 741.003 3438 704Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 3625.58 721)">Web</text><g clip-path="url(#clip0)"><g clip-path="url(#clip1)"><g clip-path="url(#clip2)"><path d="M16.25 0C11.7685 0 8.125 3.64355 8.125 8.125L8.125 36.5625 2.4375 36.5625C1.0918 36.5625 0 37.6543 0 39 0 44.3828 4.36719 48.75 9.75 48.75L40.625 48.75 40.625 36.5625 16.25 36.5625 16.25 8.125 56.875 8.125 56.875 12.1875 65 12.1875 65 8.125C65 3.64355 61.3564 0 56.875 0L16.25 0ZM65 16.25 50.7812 16.25C47.417 16.25 44.6875 18.9795 44.6875 22.3437L44.6875 58.9062C44.6875 62.2705 47.417 65 50.7812 65L75.1562 65C78.5205 65 81.25 62.2705 81.25 58.9062L81.25 32.5 69.0625 32.5C66.8154 32.5 65 30.6846 65 28.4375L65 16.25ZM69.0625 16.25 69.0625 28.4375 81.25 28.4375 69.0625 16.25Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1" transform="matrix(1.00923 0 0 1 3501 672)"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><defs><clipPath id="clip0"><rect x="3501" y="672" width="82" height="65"/></clipPath><clipPath id="clip1"><rect x="3501" y="672" width="82" height="65"/></clipPath><clipPath id="clip2"><rect x="3501" y="672" width="82" height="65"/></clipPath></defs><g transform="translate(-3437 -632)"><g><path d="M3438 704C3438 666.997 3468 637 3505 637L3726 637C3763 637 3793 666.997 3793 704L3793 704C3793 741.003 3763 771 3726 771L3505 771C3468 771 3438 741.003 3438 704Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 3626.16 721)">Web</text><g clip-path="url(#clip0)"><g clip-path="url(#clip1)"><g clip-path="url(#clip2)"><path d="M16.25 0C11.7685 0 8.125 3.64355 8.125 8.125L8.125 36.5625 2.4375 36.5625C1.0918 36.5625 0 37.6543 0 39 0 44.3828 4.36719 48.75 9.75 48.75L40.625 48.75 40.625 36.5625 16.25 36.5625 16.25 8.125 56.875 8.125 56.875 12.1875 65 12.1875 65 8.125C65 3.64355 61.3564 0 56.875 0L16.25 0ZM65 16.25 50.7812 16.25C47.417 16.25 44.6875 18.9795 44.6875 22.3437L44.6875 58.9062C44.6875 62.2705 47.417 65 50.7812 65L75.1562 65C78.5205 65 81.25 62.2705 81.25 58.9062L81.25 32.5 69.0625 32.5C66.8154 32.5 65 30.6846 65 28.4375L65 16.25ZM69.0625 16.25 69.0625 28.4375 81.25 28.4375 69.0625 16.25Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1" transform="matrix(1.00923 0 0 1 3501 672)"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs-en/index.assets/btn_read_online_dark.svg b/docs-en/index.assets/btn_read_online_dark.svg
index debaba56c..ddf3a6b2e 100644
--- a/docs-en/index.assets/btn_read_online_dark.svg
+++ b/docs-en/index.assets/btn_read_online_dark.svg
@@ -1 +1 @@
-<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><defs><clipPath id="clip0"><rect x="2765" y="672" width="81" height="65"/></clipPath><clipPath id="clip1"><rect x="2765" y="672" width="81" height="65"/></clipPath><clipPath id="clip2"><rect x="2765" y="672" width="81" height="65"/></clipPath></defs><g transform="translate(-2699 -632)"><g><path d="M2702 704C2702 666.997 2732 637 2769 637L2989 637C3026 637 3056 666.997 3056 704 3056 741.003 3026 771 2989 771L2769 771C2732 771 2702 741.003 2702 704Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2889.02 721)">Web</text><g clip-path="url(#clip0)"><g clip-path="url(#clip1)"><g clip-path="url(#clip2)"><path d="M16.2 0C11.7323 0 8.09998 3.63233 8.09998 8.09998L8.09998 36.4499 2.42999 36.4499C1.08843 36.4499 0 37.5383 0 38.8799 0 44.2461 4.35374 48.5999 9.71997 48.5999L40.4999 48.5999 40.4999 36.4499 16.2 36.4499 16.2 8.09998 56.6998 8.09998 56.6998 12.15 64.7998 12.15 64.7998 8.09998C64.7998 3.63233 61.1675 0 56.6998 0L16.2 0ZM64.7998 16.2 50.6249 16.2C47.271 16.2 44.5499 18.921 44.5499 22.2749L44.5499 58.7248C44.5499 62.0787 47.271 64.7998 50.6249 64.7998L74.9248 64.7998C78.2787 64.7998 80.9998 62.0787 80.9998 58.7248L80.9998 32.3999 68.8498 32.3999C66.6097 32.3999 64.7998 30.5901 64.7998 28.3499L64.7998 16.2ZM68.8498 16.2 68.8498 28.3499 80.9998 28.3499 68.8498 16.2Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00309 2765 672)"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="358" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><defs><clipPath id="clip0"><rect x="2765" y="672" width="81" height="65"/></clipPath><clipPath id="clip1"><rect x="2765" y="672" width="81" height="65"/></clipPath><clipPath id="clip2"><rect x="2765" y="672" width="81" height="65"/></clipPath></defs><g transform="translate(-2699 -632)"><g><path d="M2702 704C2702 666.997 2732 637 2769 637L2989 637C3026 637 3056 666.997 3056 704 3056 741.003 3026 771 2989 771L2769 771C2732 771 2702 741.003 2702 704Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2889.59 721)">Web</text><g clip-path="url(#clip0)"><g clip-path="url(#clip1)"><g clip-path="url(#clip2)"><path d="M16.2 0C11.7323 0 8.09998 3.63233 8.09998 8.09998L8.09998 36.4499 2.42999 36.4499C1.08843 36.4499 0 37.5383 0 38.8799 0 44.2461 4.35374 48.5999 9.71997 48.5999L40.4999 48.5999 40.4999 36.4499 16.2 36.4499 16.2 8.09998 56.6998 8.09998 56.6998 12.15 64.7998 12.15 64.7998 8.09998C64.7998 3.63233 61.1675 0 56.6998 0L16.2 0ZM64.7998 16.2 50.6249 16.2C47.271 16.2 44.5499 18.921 44.5499 22.2749L44.5499 58.7248C44.5499 62.0787 47.271 64.7998 50.6249 64.7998L74.9248 64.7998C78.2787 64.7998 80.9998 62.0787 80.9998 58.7248L80.9998 32.3999 68.8498 32.3999C66.6097 32.3999 64.7998 30.5901 64.7998 28.3499L64.7998 16.2ZM68.8498 16.2 68.8498 28.3499 80.9998 28.3499 68.8498 16.2Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00309 2765 672)"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs/chapter_array_and_linkedlist/linked_list.md b/docs/chapter_array_and_linkedlist/linked_list.md
index 1b5f034dc..1e8399246 100755
--- a/docs/chapter_array_and_linkedlist/linked_list.md
+++ b/docs/chapter_array_and_linkedlist/linked_list.md
@@ -875,9 +875,10 @@ comments: true
     ```c title="linked_list.c"
     /* 访问链表中索引为 index 的节点 */
     ListNode *access(ListNode *head, int index) {
-        while (head && head->next && index) {
+        for (int i = 0; i < index; i++) {
+            if (head == NULL)
+                return NULL;
             head = head->next;
-            index--;
         }
         return head;
     }
diff --git a/docs/index.assets/btn_download_pdf.svg b/docs/index.assets/btn_download_pdf.svg
index 1f5b47963..e77fe0312 100644
--- a/docs/index.assets/btn_download_pdf.svg
+++ b/docs/index.assets/btn_download_pdf.svg
@@ -1 +1 @@
-<svg width="458" height="138" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-1952 -838)"><g><path d="M1954 907C1954 869.997 1984 840 2021 840L2342 840C2379 840 2409 869.997 2409 907L2409 907C2409 944.003 2379 974 2342 974L2021 974C1984 974 1954 944.003 1954 907Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2134.57 924)">下载</text><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2241.71 924)">PDF</text><g><g><g><path d="M2035 882.125C2035 877.644 2038.64 874 2043.12 874L2063.44 874 2063.44 890.25C2063.44 892.497 2065.25 894.313 2067.5 894.313L2083.75 894.313 2083.75 912.594 2057.34 912.594C2052.86 912.594 2049.22 916.237 2049.22 920.719L2049.22 939 2043.12 939C2038.64 939 2035 935.357 2035 930.875L2035 882.125ZM2083.75 890.25 2067.5 890.25 2067.5 874 2083.75 890.25ZM2057.34 918.688 2061.41 918.688C2065.33 918.688 2068.52 921.874 2068.52 925.797 2068.52 929.72 2065.33 932.906 2061.41 932.906L2059.38 932.906 2059.38 936.969C2059.38 938.086 2058.46 939 2057.34 939 2056.23 939 2055.31 938.086 2055.31 936.969L2055.31 930.875 2055.31 920.719C2055.31 919.602 2056.23 918.688 2057.34 918.688ZM2061.41 928.844C2063.09 928.844 2064.45 927.486 2064.45 925.797 2064.45 924.109 2063.09 922.75 2061.41 922.75L2059.38 922.75 2059.38 928.844 2061.41 928.844ZM2073.59 918.688 2077.66 918.688C2081.02 918.688 2083.75 921.417 2083.75 924.781L2083.75 932.906C2083.75 936.271 2081.02 939 2077.66 939L2073.59 939C2072.48 939 2071.56 938.086 2071.56 936.969L2071.56 920.719C2071.56 919.602 2072.48 918.688 2073.59 918.688ZM2077.66 934.938C2078.77 934.938 2079.69 934.024 2079.69 932.906L2079.69 924.781C2079.69 923.664 2078.77 922.75 2077.66 922.75L2075.62 922.75 2075.62 934.938 2077.66 934.938ZM2087.81 920.719C2087.81 919.602 2088.73 918.688 2089.84 918.688L2095.94 918.688C2097.05 918.688 2097.97 919.602 2097.97 920.719 2097.97 921.836 2097.05 922.75 2095.94 922.75L2091.88 922.75 2091.88 926.813 2095.94 926.813C2097.05 926.813 2097.97 927.727 2097.97 928.844 2097.97 929.961 2097.05 930.875 2095.94 930.875L2091.88 930.875 2091.88 936.969C2091.88 938.086 2090.96 939 2089.84 939 2088.73 939 2087.81 938.086 2087.81 936.969L2087.81 928.844 2087.81 920.719Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="458" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-1952 -838)"><g><path d="M1954 907C1954 869.997 1984 840 2021 840L2342 840C2379 840 2409 869.997 2409 907L2409 907C2409 944.003 2379 974 2342 974L2021 974C1984 974 1954 944.003 1954 907Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2135.72 924)">下载</text><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2242.85 924)">PDF</text><g><g><g><path d="M2035 882.125C2035 877.644 2038.64 874 2043.12 874L2063.44 874 2063.44 890.25C2063.44 892.497 2065.25 894.313 2067.5 894.313L2083.75 894.313 2083.75 912.594 2057.34 912.594C2052.86 912.594 2049.22 916.237 2049.22 920.719L2049.22 939 2043.12 939C2038.64 939 2035 935.357 2035 930.875L2035 882.125ZM2083.75 890.25 2067.5 890.25 2067.5 874 2083.75 890.25ZM2057.34 918.688 2061.41 918.688C2065.33 918.688 2068.52 921.874 2068.52 925.797 2068.52 929.72 2065.33 932.906 2061.41 932.906L2059.38 932.906 2059.38 936.969C2059.38 938.086 2058.46 939 2057.34 939 2056.23 939 2055.31 938.086 2055.31 936.969L2055.31 930.875 2055.31 920.719C2055.31 919.602 2056.23 918.688 2057.34 918.688ZM2061.41 928.844C2063.09 928.844 2064.45 927.486 2064.45 925.797 2064.45 924.109 2063.09 922.75 2061.41 922.75L2059.38 922.75 2059.38 928.844 2061.41 928.844ZM2073.59 918.688 2077.66 918.688C2081.02 918.688 2083.75 921.417 2083.75 924.781L2083.75 932.906C2083.75 936.271 2081.02 939 2077.66 939L2073.59 939C2072.48 939 2071.56 938.086 2071.56 936.969L2071.56 920.719C2071.56 919.602 2072.48 918.688 2073.59 918.688ZM2077.66 934.938C2078.77 934.938 2079.69 934.024 2079.69 932.906L2079.69 924.781C2079.69 923.664 2078.77 922.75 2077.66 922.75L2075.62 922.75 2075.62 934.938 2077.66 934.938ZM2087.81 920.719C2087.81 919.602 2088.73 918.688 2089.84 918.688L2095.94 918.688C2097.05 918.688 2097.97 919.602 2097.97 920.719 2097.97 921.836 2097.05 922.75 2095.94 922.75L2091.88 922.75 2091.88 926.813 2095.94 926.813C2097.05 926.813 2097.97 927.727 2097.97 928.844 2097.97 929.961 2097.05 930.875 2095.94 930.875L2091.88 930.875 2091.88 936.969C2091.88 938.086 2090.96 939 2089.84 939 2088.73 939 2087.81 938.086 2087.81 936.969L2087.81 928.844 2087.81 920.719Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs/index.assets/btn_download_pdf_dark.svg b/docs/index.assets/btn_download_pdf_dark.svg
index f24cc1f99..039e36688 100644
--- a/docs/index.assets/btn_download_pdf_dark.svg
+++ b/docs/index.assets/btn_download_pdf_dark.svg
@@ -1 +1 @@
-<svg width="459" height="138" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-1223 -838)"><g><path d="M1227 907C1227 869.997 1257 840 1294 840L1614 840C1651 840 1681 869.997 1681 907L1681 907C1681 944.004 1651 974.001 1614 974.001L1294 974C1257 974 1227 944.003 1227 907Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1406.83 924)">下载</text><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1513.97 924)">PDF</text><g><g><g><path d="M1307 882.125C1307 877.644 1310.64 874 1315.12 874L1335.44 874 1335.44 890.25C1335.44 892.497 1337.25 894.313 1339.5 894.313L1355.75 894.313 1355.75 912.594 1329.34 912.594C1324.86 912.594 1321.22 916.237 1321.22 920.719L1321.22 939 1315.12 939C1310.64 939 1307 935.357 1307 930.875L1307 882.125ZM1355.75 890.25 1339.5 890.25 1339.5 874 1355.75 890.25ZM1329.34 918.688 1333.41 918.688C1337.33 918.688 1340.52 921.874 1340.52 925.797 1340.52 929.72 1337.33 932.906 1333.41 932.906L1331.37 932.906 1331.37 936.969C1331.37 938.086 1330.46 939 1329.34 939 1328.23 939 1327.31 938.086 1327.31 936.969L1327.31 930.875 1327.31 920.719C1327.31 919.602 1328.23 918.688 1329.34 918.688ZM1333.41 928.844C1335.09 928.844 1336.45 927.486 1336.45 925.797 1336.45 924.109 1335.09 922.75 1333.41 922.75L1331.37 922.75 1331.37 928.844 1333.41 928.844ZM1345.59 918.688 1349.66 918.688C1353.02 918.688 1355.75 921.417 1355.75 924.781L1355.75 932.906C1355.75 936.271 1353.02 939 1349.66 939L1345.59 939C1344.48 939 1343.56 938.086 1343.56 936.969L1343.56 920.719C1343.56 919.602 1344.48 918.688 1345.59 918.688ZM1349.66 934.938C1350.77 934.938 1351.69 934.024 1351.69 932.906L1351.69 924.781C1351.69 923.664 1350.77 922.75 1349.66 922.75L1347.62 922.75 1347.62 934.938 1349.66 934.938ZM1359.81 920.719C1359.81 919.602 1360.73 918.688 1361.84 918.688L1367.94 918.688C1369.05 918.688 1369.97 919.602 1369.97 920.719 1369.97 921.836 1369.05 922.75 1367.94 922.75L1363.87 922.75 1363.87 926.813 1367.94 926.813C1369.05 926.813 1369.97 927.727 1369.97 928.844 1369.97 929.961 1369.05 930.875 1367.94 930.875L1363.87 930.875 1363.87 936.969C1363.87 938.086 1362.96 939 1361.84 939 1360.73 939 1359.81 938.086 1359.81 936.969L1359.81 928.844 1359.81 920.719Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="458" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-1223 -838)"><g><path d="M1227 907C1227 869.997 1257 840 1294 840L1614 840C1651 840 1681 869.997 1681 907L1681 907C1681 944.004 1651 974.001 1614 974.001L1294 974C1257 974 1227 944.003 1227 907Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1407.98 924)">下载</text><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1515.12 924)">PDF</text><g><g><g><path d="M1307 882.125C1307 877.644 1310.64 874 1315.12 874L1335.44 874 1335.44 890.25C1335.44 892.497 1337.25 894.313 1339.5 894.313L1355.75 894.313 1355.75 912.594 1329.34 912.594C1324.86 912.594 1321.22 916.237 1321.22 920.719L1321.22 939 1315.12 939C1310.64 939 1307 935.357 1307 930.875L1307 882.125ZM1355.75 890.25 1339.5 890.25 1339.5 874 1355.75 890.25ZM1329.34 918.688 1333.41 918.688C1337.33 918.688 1340.52 921.874 1340.52 925.797 1340.52 929.72 1337.33 932.906 1333.41 932.906L1331.37 932.906 1331.37 936.969C1331.37 938.086 1330.46 939 1329.34 939 1328.23 939 1327.31 938.086 1327.31 936.969L1327.31 930.875 1327.31 920.719C1327.31 919.602 1328.23 918.688 1329.34 918.688ZM1333.41 928.844C1335.09 928.844 1336.45 927.486 1336.45 925.797 1336.45 924.109 1335.09 922.75 1333.41 922.75L1331.37 922.75 1331.37 928.844 1333.41 928.844ZM1345.59 918.688 1349.66 918.688C1353.02 918.688 1355.75 921.417 1355.75 924.781L1355.75 932.906C1355.75 936.271 1353.02 939 1349.66 939L1345.59 939C1344.48 939 1343.56 938.086 1343.56 936.969L1343.56 920.719C1343.56 919.602 1344.48 918.688 1345.59 918.688ZM1349.66 934.938C1350.77 934.938 1351.69 934.024 1351.69 932.906L1351.69 924.781C1351.69 923.664 1350.77 922.75 1349.66 922.75L1347.62 922.75 1347.62 934.938 1349.66 934.938ZM1359.81 920.719C1359.81 919.602 1360.73 918.688 1361.84 918.688L1367.94 918.688C1369.05 918.688 1369.97 919.602 1369.97 920.719 1369.97 921.836 1369.05 922.75 1367.94 922.75L1363.87 922.75 1363.87 926.813 1367.94 926.813C1369.05 926.813 1369.97 927.727 1369.97 928.844 1369.97 929.961 1369.05 930.875 1367.94 930.875L1363.87 930.875 1363.87 936.969C1363.87 938.086 1362.96 939 1361.84 939 1360.73 939 1359.81 938.086 1359.81 936.969L1359.81 928.844 1359.81 920.719Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs/index.assets/btn_english_edition.svg b/docs/index.assets/btn_english_edition.svg
index 4bf9f5d3b..96cfd50c3 100644
--- a/docs/index.assets/btn_english_edition.svg
+++ b/docs/index.assets/btn_english_edition.svg
@@ -1 +1 @@
-<svg width="458" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-1952 -1242)"><g><path d="M1954 1313C1954 1276 1984 1246 2021 1246L2342 1246C2379 1246 2409 1276 2409 1313L2409 1313C2409 1350 2379 1380 2342 1380L2021 1380C1984 1380 1954 1350 1954 1313Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="700" font-stretch="normal" font-size="41" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2132.59 1328)">English Ed</text><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="700" font-stretch="normal" font-size="41" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2342.28 1328)">.</text><g><g><g><path d="M0 17.2001C0 12.4566 3.85658 8.60003 8.60003 8.60003L34.4001 8.60003 40.8501 8.60003 43.0001 8.60003 77.4003 8.60003C82.1437 8.60003 86.0003 12.4566 86.0003 17.2001L86.0003 51.6002C86.0003 56.3436 82.1437 60.2002 77.4003 60.2002L43.0001 60.2002 40.8501 60.2002 34.4001 60.2002 8.60003 60.2002C3.85658 60.2002 0 56.3436 0 51.6002L0 17.2001ZM43.0001 17.2001 43.0001 51.6002 77.4003 51.6002 77.4003 17.2001 43.0001 17.2001ZM23.9591 23.6366C23.5291 22.6691 22.5616 22.0376 21.5001 22.0376 20.4385 22.0376 19.471 22.6691 19.041 23.6366L10.441 42.9867C9.83628 44.3439 10.4544 45.9295 11.8116 46.5342 13.1688 47.1389 14.7544 46.5208 15.3591 45.1636L16.5551 42.4626 26.4451 42.4626 27.641 45.1636C28.2457 46.5208 29.8314 47.1255 31.1885 46.5342 32.5457 45.943 33.1504 44.3439 32.5592 42.9867L23.9591 23.6366ZM21.5001 31.3364 24.0532 37.0876 18.9469 37.0876 21.5001 31.3364ZM60.2002 22.0376C61.6783 22.0376 62.8877 23.247 62.8877 24.7251L62.8877 25.2626 68.8002 25.2626 70.9502 25.2626C72.4284 25.2626 73.6378 26.472 73.6378 27.9501 73.6378 29.4282 72.4284 30.6376 70.9502 30.6376L70.6815 30.6376 70.4665 31.2423C69.2706 34.5211 67.4565 37.5042 65.1452 40.0305 65.2662 40.1111 65.3871 40.1783 65.508 40.2455L68.0477 41.7639C69.3243 42.5298 69.7274 44.1827 68.9749 45.4458 68.2224 46.7089 66.5562 47.1255 65.293 46.373L62.7533 44.8545C62.1487 44.4917 61.5708 44.1155 60.993 43.7123 59.5686 44.7202 58.0502 45.5936 56.4243 46.3192L55.9405 46.5342C54.5833 47.1389 52.9977 46.5208 52.393 45.1636 51.7883 43.8064 52.4064 42.2208 53.7636 41.6161L54.2474 41.4011C55.1074 41.0114 55.9405 40.5814 56.7333 40.0842L55.0939 38.4448C54.0458 37.3967 54.0458 35.6901 55.0939 34.642 56.1421 33.5939 57.8486 33.5939 58.8968 34.642L60.8587 36.6039 60.9258 36.6711C62.5921 34.9107 63.9493 32.8682 64.9302 30.6242L60.2002 30.6242 50.5252 30.6242C49.047 30.6242 47.8377 29.4148 47.8377 27.9367 47.8377 26.4585 49.047 25.2491 50.5252 25.2491L57.5127 25.2491 57.5127 24.7116C57.5127 23.2335 58.7221 22.0241 60.2002 22.0241Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.0029 2019 1278)"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="458" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-1952 -1242)"><g><path d="M1954 1313C1954 1276 1984 1246 2021 1246L2342 1246C2379 1246 2409 1276 2409 1313L2409 1313C2409 1350 2379 1380 2342 1380L2021 1380C1984 1380 1954 1350 1954 1313Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="41" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2138.32 1328)">English Ed.</text><g><g><g><path d="M0 17.2001C0 12.4566 3.85658 8.60003 8.60003 8.60003L34.4001 8.60003 40.8501 8.60003 43.0001 8.60003 77.4003 8.60003C82.1437 8.60003 86.0003 12.4566 86.0003 17.2001L86.0003 51.6002C86.0003 56.3436 82.1437 60.2002 77.4003 60.2002L43.0001 60.2002 40.8501 60.2002 34.4001 60.2002 8.60003 60.2002C3.85658 60.2002 0 56.3436 0 51.6002L0 17.2001ZM43.0001 17.2001 43.0001 51.6002 77.4003 51.6002 77.4003 17.2001 43.0001 17.2001ZM23.9591 23.6366C23.5291 22.6691 22.5616 22.0376 21.5001 22.0376 20.4385 22.0376 19.471 22.6691 19.041 23.6366L10.441 42.9867C9.83628 44.3439 10.4544 45.9295 11.8116 46.5342 13.1688 47.1389 14.7544 46.5208 15.3591 45.1636L16.5551 42.4626 26.4451 42.4626 27.641 45.1636C28.2457 46.5208 29.8314 47.1255 31.1885 46.5342 32.5457 45.943 33.1504 44.3439 32.5592 42.9867L23.9591 23.6366ZM21.5001 31.3364 24.0532 37.0876 18.9469 37.0876 21.5001 31.3364ZM60.2002 22.0376C61.6783 22.0376 62.8877 23.247 62.8877 24.7251L62.8877 25.2626 68.8002 25.2626 70.9502 25.2626C72.4284 25.2626 73.6378 26.472 73.6378 27.9501 73.6378 29.4282 72.4284 30.6376 70.9502 30.6376L70.6815 30.6376 70.4665 31.2423C69.2706 34.5211 67.4565 37.5042 65.1452 40.0305 65.2662 40.1111 65.3871 40.1783 65.508 40.2455L68.0477 41.7639C69.3243 42.5298 69.7274 44.1827 68.9749 45.4458 68.2224 46.7089 66.5562 47.1255 65.293 46.373L62.7533 44.8545C62.1487 44.4917 61.5708 44.1155 60.993 43.7123 59.5686 44.7202 58.0502 45.5936 56.4243 46.3192L55.9405 46.5342C54.5833 47.1389 52.9977 46.5208 52.393 45.1636 51.7883 43.8064 52.4064 42.2208 53.7636 41.6161L54.2474 41.4011C55.1074 41.0114 55.9405 40.5814 56.7333 40.0842L55.0939 38.4448C54.0458 37.3967 54.0458 35.6901 55.0939 34.642 56.1421 33.5939 57.8486 33.5939 58.8968 34.642L60.8587 36.6039 60.9258 36.6711C62.5921 34.9107 63.9493 32.8682 64.9302 30.6242L60.2002 30.6242 50.5252 30.6242C49.047 30.6242 47.8377 29.4148 47.8377 27.9367 47.8377 26.4585 49.047 25.2491 50.5252 25.2491L57.5127 25.2491 57.5127 24.7116C57.5127 23.2335 58.7221 22.0241 60.2002 22.0241Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.0029 2019 1278)"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs/index.assets/btn_english_edition_dark.svg b/docs/index.assets/btn_english_edition_dark.svg
index aea14a45b..da9903e7c 100644
--- a/docs/index.assets/btn_english_edition_dark.svg
+++ b/docs/index.assets/btn_english_edition_dark.svg
@@ -1 +1 @@
-<svg width="459" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-1223 -1242)"><g><path d="M1227 1313C1227 1276 1257 1246 1294 1246L1614 1246C1651 1246 1681 1276 1681 1313L1681 1313C1681 1350 1651 1380 1614 1380L1294 1380C1257 1380 1227 1350 1227 1313Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="700" font-stretch="normal" font-size="41" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1404.85 1328)">English Ed</text><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="700" font-stretch="normal" font-size="41" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1614.54 1328)">.</text><g><g><g><path d="M0 17.2C0 12.4566 3.85656 8.59999 8.59999 8.59999L34.4 8.59999 40.85 8.59999 43 8.59999 77.3999 8.59999C82.1434 8.59999 85.9999 12.4566 85.9999 17.2L85.9999 51.6C85.9999 56.3434 82.1434 60.2 77.3999 60.2L43 60.2 40.85 60.2 34.4 60.2 8.59999 60.2C3.85656 60.2 0 56.3434 0 51.6L0 17.2ZM43 17.2 43 51.6 77.3999 51.6 77.3999 17.2 43 17.2ZM23.959 23.6365C23.529 22.669 22.5615 22.0375 21.5 22.0375 20.4384 22.0375 19.4709 22.669 19.0409 23.6365L10.4409 42.9865C9.83624 44.3437 10.4544 45.9293 11.8116 46.534 13.1687 47.1387 14.7544 46.5206 15.3591 45.1634L16.555 42.4625 26.445 42.4625 27.6409 45.1634C28.2456 46.5206 29.8312 47.1253 31.1884 46.534 32.5456 45.9428 33.1503 44.3437 32.559 42.9865L23.959 23.6365ZM21.5 31.3362 24.0531 37.0875 18.9469 37.0875 21.5 31.3362ZM60.2 22.0375C61.6781 22.0375 62.8875 23.2469 62.8875 24.725L62.8875 25.2625 68.7999 25.2625 70.95 25.2625C72.4281 25.2625 73.6374 26.4719 73.6374 27.95 73.6374 29.4281 72.4281 30.6375 70.95 30.6375L70.6812 30.6375 70.4662 31.2422C69.2703 34.5209 67.4562 37.504 65.145 40.0303 65.2659 40.1109 65.3868 40.1781 65.5078 40.2453L68.0474 41.7637C69.324 42.5297 69.7271 44.1825 68.9746 45.4456 68.2221 46.7087 66.5559 47.1253 65.2928 46.3728L62.7531 44.8543C62.1484 44.4915 61.5706 44.1153 60.9928 43.7122 59.5684 44.72 58.05 45.5934 56.424 46.319L55.9403 46.534C54.5831 47.1387 52.9975 46.5206 52.3928 45.1634 51.7881 43.8062 52.4062 42.2206 53.7634 41.6159L54.2472 41.4009C55.1071 41.0112 55.9403 40.5812 56.7331 40.084L55.0937 38.4447C54.0456 37.3965 54.0456 35.69 55.0937 34.6418 56.1418 33.5937 57.8484 33.5937 58.8965 34.6418L60.8584 36.6037 60.9256 36.6709C62.5918 34.9106 63.949 32.8681 64.93 30.624L60.2 30.624 50.525 30.624C49.0468 30.624 47.8375 29.4147 47.8375 27.9365 47.8375 26.4584 49.0468 25.249 50.525 25.249L57.5125 25.249 57.5125 24.7115C57.5125 23.2334 58.7218 22.024 60.2 22.024Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00291 1291 1278)"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="458" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-1223 -1242)"><g><path d="M1227 1313C1227 1276 1257 1246 1294 1246L1614 1246C1651 1246 1681 1276 1681 1313L1681 1313C1681 1350 1651 1380 1614 1380L1294 1380C1257 1380 1227 1350 1227 1313Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="41" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1410.58 1328)">English Ed.</text><g><g><g><path d="M0 17.2C0 12.4566 3.85656 8.59999 8.59999 8.59999L34.4 8.59999 40.85 8.59999 43 8.59999 77.3999 8.59999C82.1434 8.59999 85.9999 12.4566 85.9999 17.2L85.9999 51.6C85.9999 56.3434 82.1434 60.2 77.3999 60.2L43 60.2 40.85 60.2 34.4 60.2 8.59999 60.2C3.85656 60.2 0 56.3434 0 51.6L0 17.2ZM43 17.2 43 51.6 77.3999 51.6 77.3999 17.2 43 17.2ZM23.959 23.6365C23.529 22.669 22.5615 22.0375 21.5 22.0375 20.4384 22.0375 19.4709 22.669 19.0409 23.6365L10.4409 42.9865C9.83624 44.3437 10.4544 45.9293 11.8116 46.534 13.1687 47.1387 14.7544 46.5206 15.3591 45.1634L16.555 42.4625 26.445 42.4625 27.6409 45.1634C28.2456 46.5206 29.8312 47.1253 31.1884 46.534 32.5456 45.9428 33.1503 44.3437 32.559 42.9865L23.959 23.6365ZM21.5 31.3362 24.0531 37.0875 18.9469 37.0875 21.5 31.3362ZM60.2 22.0375C61.6781 22.0375 62.8875 23.2469 62.8875 24.725L62.8875 25.2625 68.7999 25.2625 70.95 25.2625C72.4281 25.2625 73.6374 26.4719 73.6374 27.95 73.6374 29.4281 72.4281 30.6375 70.95 30.6375L70.6812 30.6375 70.4662 31.2422C69.2703 34.5209 67.4562 37.504 65.145 40.0303 65.2659 40.1109 65.3868 40.1781 65.5078 40.2453L68.0474 41.7637C69.324 42.5297 69.7271 44.1825 68.9746 45.4456 68.2221 46.7087 66.5559 47.1253 65.2928 46.3728L62.7531 44.8543C62.1484 44.4915 61.5706 44.1153 60.9928 43.7122 59.5684 44.72 58.05 45.5934 56.424 46.319L55.9403 46.534C54.5831 47.1387 52.9975 46.5206 52.3928 45.1634 51.7881 43.8062 52.4062 42.2206 53.7634 41.6159L54.2472 41.4009C55.1071 41.0112 55.9403 40.5812 56.7331 40.084L55.0937 38.4447C54.0456 37.3965 54.0456 35.69 55.0937 34.6418 56.1418 33.5937 57.8484 33.5937 58.8965 34.6418L60.8584 36.6037 60.9256 36.6709C62.5918 34.9106 63.949 32.8681 64.93 30.624L60.2 30.624 50.525 30.624C49.0468 30.624 47.8375 29.4147 47.8375 27.9365 47.8375 26.4584 49.0468 25.249 50.525 25.249L57.5125 25.249 57.5125 24.7115C57.5125 23.2334 58.7218 22.024 60.2 22.024Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00291 1291 1278)"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs/index.assets/btn_read_online.svg b/docs/index.assets/btn_read_online.svg
index 354221143..aacbc6577 100644
--- a/docs/index.assets/btn_read_online.svg
+++ b/docs/index.assets/btn_read_online.svg
@@ -1 +1 @@
-<svg width="458" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><g transform="translate(-2493 -825)"><g><path d="M2497 896C2497 858.997 2527 829 2564 829L2885 829C2922 829 2952 858.997 2952 896L2952 896C2952 933.003 2922 963 2885 963L2564 963C2527 963 2497 933.003 2497 896Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="0.901961"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2680.99 912)">在线阅读</text><g><g><g><path d="M16.2 0C11.7324 0 8.10001 3.63235 8.10001 8.10001L8.10001 36.4501 2.43 36.4501C1.08844 36.4501 0 37.5385 0 38.8801 0 44.2463 4.35376 48.6001 9.72002 48.6001L40.5001 48.6001 40.5001 36.4501 16.2 36.4501 16.2 8.10001 56.7001 8.10001 56.7001 12.15 64.8001 12.15 64.8001 8.10001C64.8001 3.63235 61.1678 0 56.7001 0L16.2 0ZM64.8001 16.2 50.6251 16.2C47.2712 16.2 44.5501 18.9211 44.5501 22.275L44.5501 58.7251C44.5501 62.079 47.2712 64.8001 50.6251 64.8001L74.9251 64.8001C78.279 64.8001 81.0001 62.079 81.0001 58.7251L81.0001 32.4001 68.8501 32.4001C66.6099 32.4001 64.8001 30.5902 64.8001 28.35L64.8001 16.2ZM68.8501 16.2 68.8501 28.35 81.0001 28.35 68.8501 16.2Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00308 2564 865)"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="458" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><defs><clipPath id="clip0"><rect x="2020" y="672" width="83" height="65"/></clipPath><clipPath id="clip1"><rect x="2020" y="672" width="83" height="65"/></clipPath><clipPath id="clip2"><rect x="2020" y="672" width="83" height="65"/></clipPath></defs><g transform="translate(-1952 -632)"><g><path d="M1954 704C1954 666.997 1984 637 2021 637L2342 637C2379 637 2409 666.997 2409 704L2409 704C2409 741.003 2379 771 2342 771L2021 771C1984 771 1954 741.003 1954 704Z" fill="#55AEA6" fill-rule="evenodd" fill-opacity="1"/><text fill="#FFFFFF" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 2138.01 721)">在线阅读</text><g clip-path="url(#clip0)"><g clip-path="url(#clip1)"><g clip-path="url(#clip2)"><path d="M16.2 0C11.7324 0 8.10001 3.63235 8.10001 8.10001L8.10001 36.4501 2.43 36.4501C1.08844 36.4501 0 37.5385 0 38.8801 0 44.2463 4.35376 48.6001 9.72002 48.6001L40.5001 48.6001 40.5001 36.4501 16.2 36.4501 16.2 8.10001 56.7001 8.10001 56.7001 12.15 64.8001 12.15 64.8001 8.10001C64.8001 3.63235 61.1678 0 56.7001 0L16.2 0ZM64.8001 16.2 50.6251 16.2C47.2712 16.2 44.5501 18.9211 44.5501 22.275L44.5501 58.7251C44.5501 62.079 47.2712 64.8001 50.6251 64.8001L74.9251 64.8001C78.279 64.8001 81.0001 62.079 81.0001 58.7251L81.0001 32.4001 68.8501 32.4001C66.6099 32.4001 64.8001 30.5902 64.8001 28.35L64.8001 16.2ZM68.8501 16.2 68.8501 28.35 81.0001 28.35 68.8501 16.2Z" fill="#FFFFFF" fill-rule="nonzero" fill-opacity="1" transform="matrix(1 0 0 1.00308 2021 672)"/></g></g></g></g></g></svg>
\ No newline at end of file
diff --git a/docs/index.assets/btn_read_online_dark.svg b/docs/index.assets/btn_read_online_dark.svg
index b5aef7e2b..96a6c9133 100644
--- a/docs/index.assets/btn_read_online_dark.svg
+++ b/docs/index.assets/btn_read_online_dark.svg
@@ -1 +1 @@
-<svg width="459" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><defs><clipPath id="clip0"><rect x="1292" y="672" width="83" height="65"/></clipPath><clipPath id="clip1"><rect x="1292" y="672" width="83" height="65"/></clipPath><clipPath id="clip2"><rect x="1292" y="672" width="83" height="65"/></clipPath></defs><g transform="translate(-1223 -632)"><g><path d="M1227 704C1227 666.997 1257 637 1294 637L1614 637C1651 637 1681 666.997 1681 704L1681 704C1681 741.003 1651 771 1614 771L1294 771C1257 771 1227 741.003 1227 704Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC Medium,Noto Sans SC Medium_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="500" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1410.27 721)">在线阅读</text><g clip-path="url(#clip0)"><g clip-path="url(#clip1)"><g clip-path="url(#clip2)"><path d="M16.25 0C11.7685 0 8.125 3.64355 8.125 8.125L8.125 36.5625 2.4375 36.5625C1.0918 36.5625 0 37.6543 0 39 0 44.3828 4.36719 48.75 9.75 48.75L40.625 48.75 40.625 36.5625 16.25 36.5625 16.25 8.125 56.875 8.125 56.875 12.1875 65 12.1875 65 8.125C65 3.64355 61.3564 0 56.875 0L16.25 0ZM65 16.25 50.7812 16.25C47.417 16.25 44.6875 18.9795 44.6875 22.3437L44.6875 58.9062C44.6875 62.2705 47.417 65 50.7812 65L75.1562 65C78.5205 65 81.25 62.2705 81.25 58.9062L81.25 32.5 69.0625 32.5C66.8154 32.5 65 30.6846 65 28.4375L65 16.25ZM69.0625 16.25 69.0625 28.4375 81.25 28.4375 69.0625 16.25Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1" transform="matrix(1.00923 0 0 1 1293 672)"/></g></g></g></g></g></svg>
\ No newline at end of file
+<svg width="458" height="142" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" overflow="hidden"><defs><clipPath id="clip0"><rect x="1292" y="672" width="83" height="65"/></clipPath><clipPath id="clip1"><rect x="1292" y="672" width="83" height="65"/></clipPath><clipPath id="clip2"><rect x="1292" y="672" width="83" height="65"/></clipPath></defs><g transform="translate(-1223 -632)"><g><path d="M1227 704C1227 666.997 1257 637 1294 637L1614 637C1651 637 1681 666.997 1681 704L1681 704C1681 741.003 1651 771 1614 771L1294 771C1257 771 1227 741.003 1227 704Z" fill="#52BBB1" fill-rule="evenodd" fill-opacity="1"/><text fill="#3B3B3B" fill-opacity="1" font-family="Noto Sans SC,Noto Sans SC_MSFontService,sans-serif" font-style="normal" font-variant="normal" font-weight="400" font-stretch="normal" font-size="48" text-anchor="start" direction="ltr" writing-mode="lr-tb" unicode-bidi="normal" text-decoration="none" transform="matrix(1 0 0 1 1410.27 721)">在线阅读</text><g clip-path="url(#clip0)"><g clip-path="url(#clip1)"><g clip-path="url(#clip2)"><path d="M16.25 0C11.7685 0 8.125 3.64355 8.125 8.125L8.125 36.5625 2.4375 36.5625C1.0918 36.5625 0 37.6543 0 39 0 44.3828 4.36719 48.75 9.75 48.75L40.625 48.75 40.625 36.5625 16.25 36.5625 16.25 8.125 56.875 8.125 56.875 12.1875 65 12.1875 65 8.125C65 3.64355 61.3564 0 56.875 0L16.25 0ZM65 16.25 50.7812 16.25C47.417 16.25 44.6875 18.9795 44.6875 22.3437L44.6875 58.9062C44.6875 62.2705 47.417 65 50.7812 65L75.1562 65C78.5205 65 81.25 62.2705 81.25 58.9062L81.25 32.5 69.0625 32.5C66.8154 32.5 65 30.6846 65 28.4375L65 16.25ZM69.0625 16.25 69.0625 28.4375 81.25 28.4375 69.0625 16.25Z" fill="#3B3B3B" fill-rule="nonzero" fill-opacity="1" transform="matrix(1.00923 0 0 1 1293 672)"/></g></g></g></g></g></svg>
\ No newline at end of file