diff --git a/by-language.md b/by-language.md
index f76c1a2..dcea177 100644
--- a/by-language.md
+++ b/by-language.md
@@ -1399,7 +1399,6 @@
 - [ymatsiuk/nixos-config](https://github.com/ymatsiuk/nixos-config) - Dell XPS 13 NixOS and home-manager configuration
 - [mbund/nix-config](https://github.com/mbund/nix-config) - Personal NixOS and home-manager configuration for all my machines
 - [mikeroyal/NixOS-Guide](https://github.com/mikeroyal/NixOS-Guide) - NixOS Guide. Learn all about the immutable Nix Operating System and the declarative Nix Expression Language.
-- [ryan4yin/nixos-and-flakes-book](https://github.com/ryan4yin/nixos-and-flakes-book) - :hammer_and_wrench: :heart: Want to know NixOS & Flakes in detail? Looking for a beginner-friendly tutorial? Then you've come to the right place!  想要学习使用 NixOS 与 Flakes 吗？在寻找一份新手友好的教程？那你可来对地方了！
 - [etu/nixconfig](https://github.com/etu/nixconfig) - My NixOS config
 - [Mic92/sops-nix](https://github.com/Mic92/sops-nix) - Atomic secret provisioning for NixOS based on sops
 - [ellmau/nixos](https://github.com/ellmau/nixos) - 
@@ -2719,6 +2718,7 @@
 - [l1xnan/obsidian-better-export-pdf](https://github.com/l1xnan/obsidian-better-export-pdf) - Obsidian PDF export enhancement plugin
 - [wg-easy/wg-easy](https://github.com/wg-easy/wg-easy) - The easiest way to run WireGuard VPN + Web-based Admin UI.
 - [supabase/supabase](https://github.com/supabase/supabase) - The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.
+- [ryan4yin/nixos-and-flakes-book](https://github.com/ryan4yin/nixos-and-flakes-book) - :hammer_and_wrench: :heart: Want to know NixOS & Flakes in detail? Looking for a beginner-friendly tutorial? Then you've come to the right place!  想要学习使用 NixOS 与 Flakes 吗？在寻找一份新手友好的教程？那你可来对地方了！
 - [leafac/kill-the-newsletter](https://github.com/leafac/kill-the-newsletter) - Convert email newsletters into Atom feeds
 - [ajayyy/SponsorBlockServer](https://github.com/ajayyy/SponsorBlockServer) - Skip YouTube video sponsors (server side portion)
 - [laurent22/joplin](https://github.com/laurent22/joplin) - Joplin - the privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and iOS.