diff --git a/.github/workflows/bats-test.yml b/.github/workflows/bats-test.yml
index d49baea..4762070 100644
--- a/.github/workflows/bats-test.yml
+++ b/.github/workflows/bats-test.yml
@@ -10,15 +10,62 @@ on:
       - test/test.bats.sh
 
 jobs:
-  test:
-    runs-on: ubuntu-18.04 # Test on old version bash
+  test-on-alpine:
+    runs-on: ubuntu-latest
+    container:
+      image: alpine:latest
     steps:
-    - name: Check out code
-      uses: actions/checkout@v3
+      - name: Check out code
+        uses: actions/checkout@v3
         with:
           submodules: true
-    - name: Run test
-      env:
-        AliAccessKeyId: ${{ secrets.ALIACCESSKEYID }}
-        AliAccessKeySecret: ${{ secrets.ALIACCESSKEYSECRET }}
+      - name: Install dependencies
+        run: apk add bash curl openssl
+      - name: Run test
+        env:
+          AliAccessKeyId: ${{ secrets.ALIACCESSKEYID }}
+          AliAccessKeySecret: ${{ secrets.ALIACCESSKEYSECRET }}
+        run: ./test/bats/bin/bats test/test.bats.sh
+
+  test-on-openwrt:
+    runs-on: ubuntu-latest
+    container:
+      image: openwrtorg/rootfs:x86-64-openwrt-22.03
+    steps:
+      - name: Fix var directory
+        run: mkdir -p /var/lock
+      - name: Install dependencies
+        run: |
+          opkg update
+          opkg install git git-http
+          opkg install bash curl openssl-util
+          # Bats dependencies
+          opkg install coreutils-nl
+      - name: Check out code
+        if: ${{ github.event.act }}
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - name: Check out code (with git)
+        if: ${{ !github.event.act }}
+        run: git clone --depth 1 --no-tags --recurse-submodules https://github.com/${{ github.repository }}.git /tmp/${{ github.sha }}
+      - name: Run test
+        env:
+          AliAccessKeyId: ${{ secrets.ALIACCESSKEYID }}
+          AliAccessKeySecret: ${{ secrets.ALIACCESSKEYSECRET }}
+        run: |
+          [[ -d /tmp/${{ github.sha }} ]] && cd /tmp/${{ github.sha }}
+          ./test/bats/bin/bats test/test.bats.sh
+
+  test-on-ubuntu:
+    runs-on: ubuntu-18.04 # Test on old version bash
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - name: Run test
+        env:
+          AliAccessKeyId: ${{ secrets.ALIACCESSKEYID }}
+          AliAccessKeySecret: ${{ secrets.ALIACCESSKEYSECRET }}
         run: ./test/bats/bin/bats test/test.bats.sh
diff --git a/.gitignore b/.gitignore
index 9772ff8..ddc7fc5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 .env.dev
 .env.local
 .env.test
+.secrets
diff --git a/AliyunOpenApiSDK.sh b/AliyunOpenApiSDK.sh
index a2e488e..31bf6e9 100755
--- a/AliyunOpenApiSDK.sh
+++ b/AliyunOpenApiSDK.sh
@@ -8,6 +8,8 @@ for _aliapi_command in openssl curl; do
 done
 unset _aliapi_command
 
+_ALIYUN_SDK_RUN_ON_MUSL_LIBC=$(ldd "$SHELL" | grep -q /lib/ld-musl && echo 1 || echo 0)
+
 ALIYUN_SDK_LAST_HTTP_CODE=0
 
 # aliapi_rpc <http_method> <host> <api_version> <api_action> [<--key> <value>...]
@@ -73,12 +75,17 @@ _aliapi_check_vars() {
 }
 
 _aliapi_signature_rpc() {
+    if [[ ${LC_ALL:-X} != C ]]; then
+        LC_ALL=C _aliapi_signature_rpc "$@"
+        return $?
+    fi
+
     local -u _http_method=$1
     local _str=$2 _query_str _sign_str
     local _newline='
 '
-    _str=$(LC_ALL=C sort <<< "${_str//&/$_newline}")
-    _query_str=${_str//$_newline/&}
+    _str=$(sort <<< "${_str//"&"/"$_newline"}")
+    _query_str=${_str//"$_newline"/"&"}
     _sign_str="$_http_method&$(_aliapi_urlencode "/")&$(_aliapi_urlencode "$_query_str")"
     printf "%s" "$_sign_str" | openssl dgst -sha1 -hmac "$_AliAccessKeySecret&" -binary | openssl base64 -e
 }
@@ -103,13 +110,21 @@ _aliapi_urlencode() {
         LC_ALL=C _aliapi_urlencode "$@"
         return $?
     fi
-    local char string=$1
+    local char hex string=$1
     while [[ -n $string ]]; do
         char=${string:0:1}
         string=${string:1}
         case $char in
             [-._~0-9A-Za-z]) printf %c "$char";;
-            *) printf %%%02X "'$char";;
+            *)
+                if [[ _ALIYUN_SDK_RUN_ON_MUSL_LIBC -eq 1 ]]; then
+                    # Hack musl libc for not ASCII chars (incomplete test)
+                    hex=$(printf %02X "'$char")
+                    printf %%%s "${hex:${#hex}-2}"
+                else
+                    printf %%%02X "'$char"
+                fi
+            ;;
         esac
     done
     echo