diff --git a/bin/omarchy b/bin/omarchy
index 35b8094a..0649f0a5 100755
--- a/bin/omarchy
+++ b/bin/omarchy
@@ -73,6 +73,7 @@ GROUP_DESCRIPTIONS[plymouth]="Plymouth boot theme management"
 GROUP_DESCRIPTIONS[power]="Power supply detection"
 GROUP_DESCRIPTIONS[powerprofiles]="Power profile management"
 GROUP_DESCRIPTIONS[refresh]="Reset config to defaults"
+GROUP_DESCRIPTIONS[region]="Region-specific package sources and setup"
 GROUP_DESCRIPTIONS[reinstall]="Reinstall and reset workflows"
 GROUP_DESCRIPTIONS[reminder]="Desktop notification reminders"
 GROUP_DESCRIPTIONS[remove]="Removal workflows"
diff --git a/bin/omarchy-refresh-pacman b/bin/omarchy-refresh-pacman
index 7406e6ad..80973b65 100755
--- a/bin/omarchy-refresh-pacman
+++ b/bin/omarchy-refresh-pacman
@@ -35,6 +35,11 @@ sudo cp -f /etc/pacman.d/mirrorlist /etc/pacman.d/mirrorlist.bak
 echo "Setting channel to $channel"
 sudo cp -f "$OMARCHY_PATH/default/pacman/pacman-$channel.conf" /etc/pacman.conf
 sudo cp -f "$OMARCHY_PATH/default/pacman/mirrorlist-$channel" /etc/pacman.d/mirrorlist
+region=$(omarchy-region)
+if [[ $region == "China" ]]; then
+  echo "Adding China mirrors"
+  sudo sed -i -f "$OMARCHY_PATH/default/region/china/pacman.sed" /etc/pacman.conf /etc/pacman.d/mirrorlist
+fi
 
 # Allow user customization of /etc/pacman.conf before the upgrade runs, so
 # custom repositories and IgnorePkg entries shape the downgrade-capable
diff --git a/bin/omarchy-region b/bin/omarchy-region
new file mode 100755
index 00000000..fad6bf33
--- /dev/null
+++ b/bin/omarchy-region
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# omarchy:summary=Show the region this machine is set up for
+
+set -euo pipefail
+
+region_file=/etc/omarchy/region
+
+if [[ ! -e $region_file ]]; then
+  echo "Global"
+elif [[ $(<"$region_file") == "china" ]]; then
+  echo "China"
+else
+  echo "Unknown region in $region_file: $(<"$region_file")" >&2
+  exit 1
+fi
diff --git a/default/region/china/pacman.sed b/default/region/china/pacman.sed
new file mode 100644
index 00000000..6621071a
--- /dev/null
+++ b/default/region/china/pacman.sed
@@ -0,0 +1 @@
+s|^Server = https://\([a-z-]*\)\.omarchy\.org/\(.*\)$|Server = https://\1.omarchy.cn/\2\n&|
diff --git a/install/post-install/pacman.sh b/install/post-install/pacman.sh
index da84975b..4be96b28 100644
--- a/install/post-install/pacman.sh
+++ b/install/post-install/pacman.sh
@@ -2,6 +2,10 @@
 # installs use the live ISO's offline pacman.conf until this final restore.
 cp -f "$OMARCHY_PATH/default/pacman/pacman-${OMARCHY_MIRROR:-stable}.conf" /etc/pacman.conf
 cp -f "$OMARCHY_PATH/default/pacman/mirrorlist-${OMARCHY_MIRROR:-stable}" /etc/pacman.d/mirrorlist
+region=$(omarchy-region)
+if [[ $region == "China" ]]; then
+  sed -i -f "$OMARCHY_PATH/default/region/china/pacman.sed" /etc/pacman.conf /etc/pacman.d/mirrorlist
+fi
 
 # Wait for CUPS to own the file, the way omarchy-settings does, so pacman does
 # not turn the override into a .pacnew during ISO package installation.
diff --git a/test/shell.d/channel-sudo-boundary-test.sh b/test/shell.d/channel-sudo-boundary-test.sh
index f98934c2..29554e4b 100755
--- a/test/shell.d/channel-sudo-boundary-test.sh
+++ b/test/shell.d/channel-sudo-boundary-test.sh
@@ -6,6 +6,7 @@ source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
 source "$SHELL_TEST_DIR/fixtures/sudo-boundary-test.sh"
 copy_boundary_file bin/omarchy-channel-set
 copy_boundary_file bin/omarchy-refresh-pacman
+copy_boundary_file bin/omarchy-region
 copy_boundary_file bin/omarchy-update
 export OMARCHY_UPDATE_LOGGED=1
 
diff --git a/test/shell.d/region-test.sh b/test/shell.d/region-test.sh
new file mode 100755
index 00000000..e471e33d
--- /dev/null
+++ b/test/shell.d/region-test.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
+
+test_tmp=$(mktemp -d)
+trap 'rm -rf "$test_tmp"' EXIT
+
+china_sed="$ROOT/default/region/china/pacman.sed"
+
+expected_stable_omarchy='Server = https://pkgs.omarchy.cn/stable/$arch
+Server = https://pkgs.omarchy.org/stable/$arch'
+actual=$(sed -f "$china_sed" "$ROOT/default/pacman/pacman-stable.conf" | sed -n '/^\[omarchy\]/,/^$/p' | grep '^Server')
+[[ $actual == "$expected_stable_omarchy" ]] || fail "stable [omarchy] lists pkgs.omarchy.cn before pkgs.omarchy.org" "$actual"
+pass "stable [omarchy] lists pkgs.omarchy.cn before pkgs.omarchy.org"
+
+declare -A mirrors=([stable]=stable-mirror [rc]=rc-mirror [edge]=mirror)
+for channel in stable rc edge; do
+  host=${mirrors[$channel]}
+  expected="Server = https://$host.omarchy.cn/\$repo/os/\$arch
+Server = https://$host.omarchy.org/\$repo/os/\$arch"
+  actual=$(sed -f "$china_sed" "$ROOT/default/pacman/mirrorlist-$channel")
+  [[ $actual == "$expected" ]] || fail "$channel mirrorlist lists $host.omarchy.cn first" "$actual"
+  pass "$channel mirrorlist lists $host.omarchy.cn first"
+
+  for file in "pacman-$channel.conf" "mirrorlist-$channel"; do
+    original=$(<"$ROOT/default/pacman/$file")
+    stripped=$(sed -f "$china_sed" "$ROOT/default/pacman/$file" | grep -v '^Server = https://[a-z-]*\.omarchy\.cn/')
+    [[ $stripped == "$original" ]] || fail "$file only gains .cn servers" "$(diff <(echo "$original") <(echo "$stripped"))"
+
+    org_count=$(grep -c '^Server = https://[a-z-]*\.omarchy\.org/' "$ROOT/default/pacman/$file")
+    cn_count=$(sed -f "$china_sed" "$ROOT/default/pacman/$file" | grep -c '^Server = https://[a-z-]*\.omarchy\.cn/')
+    ((org_count > 0 && org_count == cn_count)) || fail "$file gets one .cn twin per .org server" "org=$org_count cn=$cn_count"
+  done
+  pass "$channel templates only gain one .cn twin per .org server"
+done
+
+region_bin="$test_tmp/omarchy-region"
+region_file="$test_tmp/region"
+sed "s|/etc/omarchy/region|$region_file|" "$ROOT/bin/omarchy-region" >"$region_bin"
+chmod +x "$region_bin"
+
+[[ $("$region_bin") == "Global" ]] || fail "no region file reads as Global"
+pass "no region file reads as Global"
+
+echo china >"$region_file"
+[[ $("$region_bin") == "China" ]] || fail "china region file reads as China"
+pass "china region file reads as China"
+
+echo mars >"$region_file"
+if output=$("$region_bin" 2>&1); then
+  fail "an unknown region fails" "$output"
+fi
+[[ $output == "Unknown region in $region_file: mars" ]] || fail "an unknown region names the file and value" "$output"
+pass "an unknown region fails and names the file and value"
diff --git a/test/shell.d/update-hook-security-test.sh b/test/shell.d/update-hook-security-test.sh
index af7ec70a..3233c925 100755
--- a/test/shell.d/update-hook-security-test.sh
+++ b/test/shell.d/update-hook-security-test.sh
@@ -6,6 +6,7 @@ source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
 source "$SHELL_TEST_DIR/fixtures/sudo-boundary-test.sh"
 copy_boundary_file bin/omarchy-update
 copy_boundary_file bin/omarchy-refresh-pacman
+copy_boundary_file bin/omarchy-region
 # Replace the step symlink, preserving the real fixture dispatcher.
 rm "$SUDO_TEST_ROOT/bin/omarchy-update-aur-pkgs"
 copy_boundary_file bin/omarchy-update-aur-pkgs