diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 907b905..f2222fc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,12 +36,5 @@ jobs:
           ruby-version: 2.7
           bundler-cache: true
 
-      - name: Build Site
-        env:
-          JEKYLL_ENV: production
-        run: |
-          bundle exec jekyll b
-
       - name: Test Site
-        run: |
-          bash tools/test.sh
+        run: bash tools/deploy.sh --dry-run
diff --git a/.github/workflows/pages-deploy.yml.hook b/.github/workflows/pages-deploy.yml.hook
index aa90027..81a249e 100644
--- a/.github/workflows/pages-deploy.yml.hook
+++ b/.github/workflows/pages-deploy.yml.hook
@@ -25,29 +25,5 @@ jobs:
           ruby-version: 2.7
           bundler-cache: true
 
-      - name: Check baseurl
-        run: |
-          baseurl="$(grep '^baseurl:' _config.yml | sed "s/.*: *//;s/['\"]//g;s/#.*//")"
-          if [[ -n $baseurl ]]; then
-            echo "BASE_URL=$baseurl" >> $GITHUB_ENV
-          fi
-
-      - name: Build Site
-        env:
-          JEKYLL_ENV: production
-        run: |
-          bundle exec jekyll b -d "_site$BASE_URL"
-
-      - name: Test Site
-        run: |
-          bash tools/test.sh
-
       - name: Deploy
-        run: |
-          if [[ -n $BASE_URL ]]; then
-            mv _site$BASE_URL _site-rename
-            rm -rf _site
-            mv _site-rename _site
-          fi
-
-          bash tools/deploy.sh
+        run: bash tools/deploy.sh
diff --git a/tools/bump.sh b/tools/bump.sh
index 00bed1e..8d2b6f6 100755
--- a/tools/bump.sh
+++ b/tools/bump.sh
@@ -1,34 +1,24 @@
 #!/usr/bin/env bash
 #
-# How does it work:
 #
-#   1. Cherry pick the latest commit from default branch
-#      to the target release branch if the target release branch already existed.
+# 1. Bump latest version number to the following files:
 #
-#   2. Bump latest version number to the following files:
-#
-#     - _sass/jekyll-theme-chirpy.scss
-#     - _javascript/copyright
-#     - assets/js/dist/*.js (will be built by gulp later)
-#     - jekyll-theme-chirpy.gemspec
-#     - package.json
-#
-#   3. Create a git-tag on release branch
-#
-#   4. Build a RubyGems package base on the latest git-tag
+#   - _sass/jekyll-theme-chirpy.scss
+#   - _javascript/copyright
+#   - assets/js/dist/*.js (will be built by gulp later)
+#   - jekyll-theme-chirpy.gemspec
+#   - package.json
 #
+# 2. Then create a commit to automatically save the changes.
 #
 # Usage:
 #
-#   Run on default branch, if run on other branch requires parameter '-m' (manual mode).
+#   Run on the default branch or hotfix branch
 #
-#
-# Requires: Git, Gulp, RubyGems
+# Requires: Git, Gulp
 
 set -eu
 
-opt_manual=false
-
 ASSETS=(
   "_sass/jekyll-theme-chirpy.scss"
   "_javascript/copyright"
@@ -38,10 +28,6 @@ GEM_SPEC="jekyll-theme-chirpy.gemspec"
 
 NODE_META="package.json"
 
-DEFAULT_BRANCH="master"
-
-_working_branch="$(git branch --show-current)"
-
 _check_src() {
   if [[ ! -f $1 && ! -d $1 ]]; then
     echo -e "Error: Missing file \"$1\"!\n"
@@ -55,12 +41,6 @@ check() {
     exit -1
   fi
 
-  # ensure working on default branch or running in 'manual' mode
-  if [[ $_working_branch != $DEFAULT_BRANCH && $opt_manual == "false" ]]; then
-    echo "Error: This operation must be performed on the 'master' branch or '--manual' mode!"
-    exit -1
-  fi
-
   for i in "${!ASSETS[@]}"; do
     _check_src "${ASSETS[$i]}"
   done
@@ -98,75 +78,6 @@ bump() {
   fi
 }
 
-build_gem() {
-  rm -f ./*.gem
-  gem build "$GEM_SPEC"
-}
-
-release() {
-  _version="$1"
-  _major=""
-  _minor=""
-  _new_release_branch=false
-
-  IFS='.' read -r -a array <<< "$_version"
-
-  for elem in "${array[@]}"; do
-    if [[ -z $_major ]]; then
-      _major="$elem"
-    elif [[ -z $_minor ]]; then
-      _minor="$elem"
-    else
-      break
-    fi
-  done
-
-  _release_branch="$_major-$_minor-stable"
-
-  if ! $opt_manual; then
-    if [[ -z $(git branch -v | grep "$_release_branch") ]]; then
-      git checkout -b "$_release_branch"
-      _new_release_branch=true
-    else
-      # cherry-pick the latest commit from default branch to release branch
-      _last_commit="$(git rev-parse $DEFAULT_BRANCH)"
-      git checkout "$_release_branch"
-      git cherry-pick "$_last_commit" -m 1
-    fi
-
-  fi
-
-  echo -e "Bump version to $_version\n"
-  bump "$_version"
-
-  echo -e "Create tag v$_version\n"
-  git tag "v$_version"
-
-  echo -e "Build the gem pakcage for v$_version\n"
-  build_gem
-
-  # head back to working branch
-  git checkout "$_working_branch"
-
-  if [[ $_working_branch == $DEFAULT_BRANCH ]]; then
-    if $_new_release_branch; then
-      git merge "$_release_branch"
-    fi
-  fi
-
-}
-
-help() {
-  echo "Bump new version to Chirpy project"
-  echo "Usage:"
-  echo
-  echo "   bash /path/to/bump.sh [options]"
-  echo
-  echo "Options:"
-  echo "     -m, --manual         Manual relase, bump version only."
-  echo "     -h, --help           Print this help information."
-}
-
 main() {
   check
 
@@ -183,7 +94,8 @@ main() {
       exit -1
     fi
 
-    release "$_version"
+    echo -e "Bump version to $_version\n"
+    bump "$_version"
 
   else
 
@@ -192,22 +104,4 @@ main() {
 
 }
 
-while (($#)); do
-  opt="$1"
-  case $opt in
-    -m | --manual)
-      opt_manual=true
-      shift
-      ;;
-    -h | --help)
-      help
-      exit 0
-      ;;
-    *)
-      echo "unknown option '$opt'!"
-      exit 1
-      ;;
-  esac
-done
-
 main
diff --git a/tools/deploy.sh b/tools/deploy.sh
index 7e17108..84b2b10 100755
--- a/tools/deploy.sh
+++ b/tools/deploy.sh
@@ -1,22 +1,80 @@
 #!/usr/bin/env bash
 #
-# Deploy the content of _site to 'origin/<pages_branch>'
+# Build, test and then deploy the site content to 'origin/<pages_branch>'
+#
+# Requirement: html-proofer, jekyll
+#
+# Usage: See help information
 
 set -eu
 
 PAGES_BRANCH="gh-pages"
 
-_no_branch=false
+SITE_DIR="_site"
+
+_opt_dry_run=false
+
+_config="_config.yml"
+
+_no_pages_branch=false
+
 _backup_dir="$(mktemp -d)"
 
+_baseurl=""
+
+help() {
+  echo "Build, test and then deploy the site content to 'origin/<pages_branch>'"
+  echo
+  echo "Usage:"
+  echo
+  echo "   bash ./tools/deploy.sh [options]"
+  echo
+  echo "Options:"
+  echo '     -c, --config   "<config_a[,config_b[...]]>"    Specify config file(s)'
+  echo "     --dry-run                Build site and test, but not deploy"
+  echo "     -h, --help               Print this information."
+}
+
 init() {
-  if [[ -z ${GITHUB_ACTION+x} ]]; then
-    echo "ERROR: This script is not allowed to run outside of GitHub Action."
+  if [[ -z ${GITHUB_ACTION+x} && $_opt_dry_run == 'false' ]]; then
+    echo "ERROR: It is not allowed to deploy outside of the GitHub Action envrionment."
+    echo "Type option '-h' to see the help information."
     exit -1
   fi
 
+  _baseurl="$(grep '^baseurl:' _config.yml | sed "s/.*: *//;s/['\"]//g;s/#.*//")"
+}
+
+build() {
+  # clean up
+  if [[ -d $SITE_DIR ]]; then
+    rm -rf "$SITE_DIR"
+  fi
+
+  # build
+  JEKYLL_ENV=production bundle exec jekyll b -d "$SITE_DIR$_baseurl" --config "$_config"
+}
+
+test() {
+  bundle exec htmlproofer \
+    --disable-external \
+    --check-html \
+    --allow_hash_href \
+    "$SITE_DIR"
+}
+
+resume_site_dir() {
+  if [[ -n $_baseurl ]]; then
+    # Move the site file to the regular directory '_site'
+    mv "$SITE_DIR$_baseurl" "${SITE_DIR}-rename"
+    rm -rf "$SITE_DIR"
+    mv "${SITE_DIR}-rename" "$SITE_DIR"
+  fi
+}
+
+setup_gh() {
   if [[ -z $(git branch -av | grep "$PAGES_BRANCH") ]]; then
-    _no_branch=true
+    _no_pages_branch=true
     git checkout -b "$PAGES_BRANCH"
   else
     git checkout "$PAGES_BRANCH"
@@ -24,7 +82,7 @@ init() {
 }
 
 backup() {
-  mv _site/* "$_backup_dir"
+  mv "$SITE_DIR"/* "$_backup_dir"
   mv .git "$_backup_dir"
 
   # When adding custom domain from Github website,
@@ -50,7 +108,7 @@ deploy() {
   git add -A
   git commit -m "[Automation] Site update No.${GITHUB_RUN_NUMBER}"
 
-  if $_no_branch; then
+  if $_no_pages_branch; then
     git push -u origin "$PAGES_BRANCH"
   else
     git push -f
@@ -59,9 +117,43 @@ deploy() {
 
 main() {
   init
+  build
+  test
+  resume_site_dir
+
+  if $_opt_dry_run; then
+    exit 0
+  fi
+
+  setup_gh
   backup
   flush
   deploy
 }
 
+while (($#)); do
+  opt="$1"
+  case $opt in
+    -c | --config)
+      _config="$2"
+      shift
+      shift
+      ;;
+    --dry-run)
+      # build & test, but not deploy
+      _opt_dry_run=true
+      shift
+      ;;
+    -h | --help)
+      help
+      exit 0
+      ;;
+    *)
+      # unknown option
+      help
+      exit 1
+      ;;
+  esac
+done
+
 main
diff --git a/tools/init.sh b/tools/init.sh
index 2ab78df..5035ff2 100755
--- a/tools/init.sh
+++ b/tools/init.sh
@@ -16,6 +16,13 @@ help() {
   echo "     -h, --help           Print this help information."
 }
 
+check_status() {
+  if [[ -n $(git status . -s) ]]; then
+    echo "Error: Commit unstaged files first, and then run this tool againt."
+    exit -1
+  fi
+}
+
 check_init() {
   local _has_inited=false
 
@@ -40,25 +47,40 @@ check_init() {
 }
 
 init_files() {
-
   if $_no_gh; then
     rm -rf .github
   else
+    # change the files of `.github`
     mv .github/workflows/$ACTIONS_WORKFLOW.hook .
     rm -rf .github
     mkdir -p .github/workflows
     mv ./${ACTIONS_WORKFLOW}.hook .github/workflows/${ACTIONS_WORKFLOW}
+
+    # ensure the gh-actions trigger branch
+
+    _workflow=".github/workflows/${ACTIONS_WORKFLOW}"
+    _default_branch="$(git symbolic-ref refs/remotes/origin/HEAD | sed 's@^refs/remotes/origin/@@')"
+    _lineno="$(sed -n "/branches:/=" "$_workflow")"
+    sed -i "$((_lineno + 1))s/- .*/- ${_default_branch}/" "$_workflow"
+
   fi
 
+  # trace the gem lockfile on user-end
+  sed -i "/Gemfile.lock/d" .gitignore
+
+  # remove the other fies
   rm -f .travis.yml
   rm -rf _posts/* docs
 
+  # save changes
   git add -A && git add .github -f
   git commit -m "[Automation] Initialize the environment." -q
 
   echo "[INFO] Initialization successful!"
 }
 
+check_status
+
 check_init
 
 _no_gh=false
diff --git a/tools/release.sh b/tools/release.sh
new file mode 100755
index 0000000..ef5892b
--- /dev/null
+++ b/tools/release.sh
@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+#
+# According to the GitLab flow release branching model,
+# cherry-pick the last commit on the main branch to the release branch,
+# and then create a tag and gem package on the release branch (naming format: 'release/<X.Y>').
+#
+#
+# Usage:
+#
+#   It can be run on main branch, and it should be used after just finishing the last feature in the version plan,
+#   or just after merging the hotfix to the main branch.
+#
+# Requires: Git, Gulp
+
+set -eu
+
+GEM_SPEC="jekyll-theme-chirpy.gemspec"
+
+check() {
+  if [[ -n $(git status . -s) ]]; then
+    echo "Error: Commit unstaged files first, and then run this tool againt."
+    exit -1
+  fi
+
+  if [[ ! -f $GEM_SPEC ]]; then
+    echo -e "Error: Missing file \"$GEM_SPEC\"!\n"
+    exit -1
+  fi
+}
+
+release() {
+  _default_branch="$(git symbolic-ref refs/remotes/origin/HEAD | sed 's@^refs/remotes/origin/@@')"
+  _version="$(grep "spec.version" jekyll-theme-chirpy.gemspec | sed 's/.*= "//;s/".*//')" # X.Y.Z
+  _release_branch="release/${_version%.*}"
+
+  if [[ -z $(git branch -v | grep "$_release_branch") ]]; then
+    # create a new release branch
+    git checkout -b "$_release_branch"
+  else
+    # cherry-pick the latest commit from default branch to release branch
+    _last_commit="$(git rev-parse "$_default_branch")"
+    git checkout "$_release_branch"
+    git cherry-pick "$_last_commit" -m 1
+  fi
+
+  # create new tag
+  echo -e "Create tag v$_version\n"
+  git tag "v$_version"
+
+  # build a gem package
+  echo -e "Build the gem pakcage for v$_version\n"
+  rm -f ./*.gem
+  gem build "$GEM_SPEC"
+
+}
+
+main() {
+  check
+  release
+}
+
+main
diff --git a/tools/test.sh b/tools/test.sh
deleted file mode 100755
index ecaf8c8..0000000
--- a/tools/test.sh
+++ /dev/null
@@ -1,64 +0,0 @@
-#!/usr/bin/env bash
-#
-# Using HTML-proofer to test site.
-#
-# Requirement: https://github.com/gjtorikian/html-proofer
-#
-# Usage: bash /path/to/test.sh [indicated path]
-
-DEST=_site
-
-_build=false
-
-help() {
-  echo "Usage:"
-  echo
-  echo "   bash ./tools/test.sh [options]"
-  echo
-  echo "Options:"
-  echo "     --build                  Run Jekyll build before test."
-  echo "     -d, --dir   <path>       Specify the test path."
-  echo "     -h, --help               Print this information."
-}
-
-if [[ -n $1 && -d $1 ]]; then
-  DEST=$1
-fi
-
-while (($#)); do
-  opt="$1"
-  case $opt in
-    --build)
-      _build=true
-      shift
-      ;;
-    -d | --dir)
-      if [[ ! -d $2 ]]; then
-        echo -e "Error: path '$2' doesn't exist\n"
-        help
-        exit 1
-      fi
-      DEST=$2
-      shift
-      shift
-      ;;
-    -h | --help)
-      help
-      exit 0
-      ;;
-    *)
-      # unknown option
-      help
-      exit 1
-      ;;
-  esac
-done
-
-if $_build; then
-  JEKYLL_ENV=production bundle exec jekyll b
-fi
-
-bundle exec htmlproofer "$DEST" \
-  --disable-external \
-  --check-html \
-  --allow_hash_href