diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dc8a100..72f9b9c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -219,7 +219,6 @@ jobs:
         env:
           WEBHOOK: ${{ secrets.FEISHU_BOT_WEBHOOK }}
           SIGNKEY: ${{ secrets.FEISHU_BOT_SIGNKEY }}
-          AT_BOT_OPEN_ID: ${{ secrets.FEISHU_AT_BOT_OPEN_ID }}
         run: |
           if [ -z "$WEBHOOK" ]; then
             echo "FEISHU_BOT_WEBHOOK not set, skipping"
@@ -227,16 +226,23 @@ jobs:
           fi
           PR_LINK="${{ github.server_url }}/${{ github.repository }}/pull/${{ github.event.pull_request.number }}"
           RUN_LINK="${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
-          MSG="PR updated: ${{ github.repository }}#${{ github.event.pull_request.number }} | Format check: ${{ steps.status.outputs.status }}. Reply in this thread and @mention the integration-test bot to run integration test on private host. [View PR]($PR_LINK) | [View run]($RUN_LINK)"
-          BODY=""
-          if [ -n "$AT_BOT_OPEN_ID" ]; then
-            BODY=$(jq -n \
-              --arg line "$MSG" \
-              --arg oid "$AT_BOT_OPEN_ID" \
-              '{msg_type: "post", content: {post: {zh_cn: {title: "CI", content: [[{tag: "text", text: ($line + " ")}, {tag: "at", user_id: $oid}]]}}}}')
-          else
-            BODY=$(jq -n --arg text "$MSG" '{msg_type: "text", content: {text: $text}}')
-          fi
+          TS_NOW=$(date +%s)
+          TS_ISO=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+          PAYLOAD=$(jq -nc \
+            --arg schema "ci_event_v1" \
+            --arg repo "${{ github.repository }}" \
+            --arg pr "${{ github.repository }}#${{ github.event.pull_request.number }}" \
+            --arg sha "${{ github.sha }}" \
+            --arg branch "${{ github.head_ref }}" \
+            --arg workflow "${{ github.workflow }}" \
+            --arg job "format-check" \
+            --arg run_url "$RUN_LINK" \
+            --arg conclusion "${{ steps.status.outputs.status }}" \
+            --arg ts_iso "$TS_ISO" \
+            --argjson timestamp "$TS_NOW" \
+            '{schema:$schema,repo:$repo,pr:$pr,sha:$sha,branch:$branch,workflow:$workflow,job:$job,run_url:$run_url,conclusion:$conclusion,ts_iso:$ts_iso,timestamp:$timestamp}' \
+          )
+          BODY=$(jq -n --arg text "$PAYLOAD" '{msg_type: "text", content: {text: $text}}')
           if [ -n "$SIGNKEY" ]; then
             TS=$(date +%s)
             KEY=$(printf "%s\n%s" "$TS" "$SIGNKEY")