diff --git a/.gitignore b/.gitignore
index 0723236..8340f44 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@ log
 cn.sh
 __pycache__
 Makefile
+.claude/
diff --git a/fish/completions/ff.fish b/fish/completions/ff.fish
index 7d26901..c14a827 100644
--- a/fish/completions/ff.fish
+++ b/fish/completions/ff.fish
@@ -1,6 +1,6 @@
 # Completions for ff command
 complete -c ff -f
-set -l ff_subcommands reload edit pon poff pst make script help
+set -l ff_subcommands reload edit fish dotfile pon poff pst make script s update help region
 complete -c ff -n "not __fish_seen_subcommand_from $ff_subcommands" -a "reload" -d "Reload fish configuration"
 complete -c ff -n "not __fish_seen_subcommand_from $ff_subcommands" -a "edit" -d "Edit custom fish configuration"
 complete -c ff -n "not __fish_seen_subcommand_from $ff_subcommands" -a "fish" -d "Change to fish config directory"
@@ -12,6 +12,8 @@ complete -c ff -n "not __fish_seen_subcommand_from $ff_subcommands" -a "pst" -d
 complete -c ff -n "not __fish_seen_subcommand_from $ff_subcommands" -a "script" -d "Run script from script directory"
 complete -c ff -n "not __fish_seen_subcommand_from $ff_subcommands" -a "help" -d "Show this help message"
 
+complete -c ff -n "__fish_seen_subcommand_from region" -a toggle -d "Toggle CN_REGION (国内/国外)"
+
 # # make 子命令的补全 - 直接使用脚本文件名
 # complete -c ff -n "__fish_seen_subcommand_from make" -a "help" -d "Show all make targets"
 # complete -c ff -n "__fish_seen_subcommand_from make" -a "list" -d "List all available scripts"
diff --git a/fish/functions/ff.fish b/fish/functions/ff.fish
index 50f03be..59dc33c 100644
--- a/fish/functions/ff.fish
+++ b/fish/functions/ff.fish
@@ -12,6 +12,7 @@ function ff
         "make|Run dotfile Makefile commands" \
         "script|Run script from script directory" \
         "update|Update dotfile" \
+        "region|Toggle or set CN_REGION (mirror/proxy region)" \
         "help|Show this help message"
 
     # 确保 execute-script 可用（在 fish 自动加载前手动引入一次）
@@ -82,6 +83,24 @@ function ff
             cd ~/.dotfile
             git pull origin main
             cd -
+        case region
+            set -l sub toggle
+            if test (count $argv) -ge 2
+                set sub $argv[2]
+            end
+            switch $sub
+                case toggle
+                    if test "$CN_REGION" = "1"
+                        set -gx CN_REGION 0
+                        echo "Switched to: 0 (国外)"
+                    else
+                        set -gx CN_REGION 1
+                        echo "Switched to: 1 (国内)"
+                    end
+                case '*'
+                    echo "Usage: ff region [toggle]"
+                    echo "Unknown subcommand: $sub"
+            end
         case '*'
             if test -z "$argv[1]"
                 echo "Error: No command specified"