diff --git a/.github/workflows/build_linux_arm64_wheels-gh.yml b/.github/workflows/build_linux_arm64_wheels-gh.yml
index 7737a8a6a5a..bd41586ef7b 100644
--- a/.github/workflows/build_linux_arm64_wheels-gh.yml
+++ b/.github/workflows/build_linux_arm64_wheels-gh.yml
@@ -59,30 +59,9 @@ jobs:
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
-      - name: Restore submodules cache
-        uses: actions/cache/restore@v3
-        id: cache
-        with:
-          path: |
-            contrib/**
-            !contrib/*-cmake
-            !**/CMakeLists.txt
-          key: |
-            submodule-${{ hashFiles('.gitmodules') }}
-      - name: Update submodules if cache miss
-        if: steps.cache.outputs.cache-hit != 'true'
+      - name: Update submodules
         run: |
           git submodule update --init --recursive --jobs 4
-      - name: Save submodules cache
-        if: steps.cache.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v3
-        with:
-          path: |
-            contrib/**
-            !contrib/*-cmake
-            !**/CMakeLists.txt
-          key: |
-            submodule-${{ hashFiles('.gitmodules') }}
       - name: ccache
         uses: hendrikmuhs/ccache-action@v1.2
         with:
diff --git a/.github/workflows/build_linux_x86_wheels.yml b/.github/workflows/build_linux_x86_wheels.yml
index 4a19f874ea9..64c7f249a3b 100644
--- a/.github/workflows/build_linux_x86_wheels.yml
+++ b/.github/workflows/build_linux_x86_wheels.yml
@@ -59,26 +59,9 @@ jobs:
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
-      - name: Restore submodules cache
-        uses: actions/cache/restore@v3
-        id: cache
-        with:
-          path: |
-            contrib/**
-          key: |
-            submodule-${{ hashFiles('.gitmodules') }}
-      - name: Update submodules if cache miss
-        if: steps.cache.outputs.cache-hit != 'true'
+      - name: Update submodules
         run: |
           git submodule update --init --recursive --jobs 4
-      - name: Save submodules cache
-        if: steps.cache.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v3
-        with:
-          path: |
-            contrib/**
-          key: |
-            submodule-${{ hashFiles('.gitmodules') }}
       - name: ccache
         uses: hendrikmuhs/ccache-action@v1.2
         with:
diff --git a/.github/workflows/build_macos_x86_wheels.yml b/.github/workflows/build_macos_x86_wheels.yml
index 22027959efc..cd51307c4ab 100644
--- a/.github/workflows/build_macos_x86_wheels.yml
+++ b/.github/workflows/build_macos_x86_wheels.yml
@@ -51,26 +51,9 @@ jobs:
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
-      - name: Restore submodules cache
-        uses: actions/cache/restore@v3
-        id: cache
-        with:
-          path: |
-            contrib/**
-          key: |
-            submodule-${{ hashFiles('.gitmodules') }}
-      - name: Update submodules if cache miss
-        if: steps.cache.outputs.cache-hit != 'true'
+      - name: Update submodules
         run: |
           git submodule update --init --recursive --jobs 4
-      - name: Save submodules cache
-        if: steps.cache.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v3
-        with:
-          path: |
-            contrib/**
-          key: |
-            submodule-${{ hashFiles('.gitmodules') }}
       - name: ccache
         uses: hendrikmuhs/ccache-action@v1.2
         with:
diff --git a/.github/workflows/clean b/.github/workflows/clean
deleted file mode 100644
index e69de29bb2d..00000000000
diff --git a/.github/workflows/pr_ci.yaml b/.github/workflows/pr_ci.yaml
index d2305c83202..342b386d77e 100644
--- a/.github/workflows/pr_ci.yaml
+++ b/.github/workflows/pr_ci.yaml
@@ -18,13 +18,6 @@ jobs:
             mkdir -p /home/ubuntu/pr_runner/
             git clone https://github.com/chdb-io/chdb.git /home/ubuntu/pr_runner/chdb
           fi
-      
-      - name: Check for ccache status
-        run: |
-          ccache -sv
-
-      - name: Copy submodules
-        run: cp -a /builder_cache/contrib /home/ubuntu/pr_runner/chdb/
 
       - name: Cleanup and update chdb directory
         run: |
@@ -46,31 +39,3 @@ jobs:
           python3 -m pip install flake8
           cd chdb && python3 -m flake8
         working-directory: /home/ubuntu/pr_runner/chdb
-
-      - name: Cleanup dist directory
-        run: rm -rf /home/ubuntu/pr_runner/chdb/dist/*
-
-      - name: Set PYTHON_VERSIONS environment variable
-        run: echo "PYTHON_VERSIONS=3.11" >> $GITHUB_ENV
-
-      - name: Run build script
-        run: bash -x ./chdb/build_linux_arm64.sh
-        working-directory: /home/ubuntu/pr_runner/chdb
-
-      - name: Check ccache statistics
-        run: |
-          ccache -s
-          ls -lh chdb
-          df -h
-        working-directory: /home/ubuntu/pr_runner/chdb
-
-      - name: Audit wheels
-        run: |
-          export PYENV_ROOT="$HOME/.pyenv"
-          [[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"
-          eval "$(pyenv init -)"
-          pyenv local 3.11
-          ls -lh dist
-          python3 -m pip install auditwheel
-          python3 -m auditwheel -v repair -w dist/ --plat manylinux_2_17_aarch64 dist/*.whl
-        working-directory: /home/ubuntu/pr_runner/chdb