diff --git a/.github/workflows/test-external.yaml b/.github/workflows/test-external.yaml
index ecc78d5..187a03e 100644
--- a/.github/workflows/test-external.yaml
+++ b/.github/workflows/test-external.yaml
@@ -14,16 +14,6 @@ jobs:
         echo ${{ github.repository_owner }}
         echo ${{ github.repository }}
 
-  test-external-rcore-ch6:
-    if: github.repository_owner == 'sysones'
-    uses: sysones/rcore-tutorial-v3-with-hal-component/.github/workflows/test-run.yml@ch7
-    with:
-      # The directory to Top test, which need to be empty or not exist in this repository
-      TopTestDirectory: RcoreTest
-      CallerPackage: polyhal
-      CallerRepository: ${{ github.repository }}
-      CallerCommit: ${{ github.sha }}
-
   test-external-rcore-ch7:
     if: github.repository_owner == 'sysones'
     uses: sysones/rcore-tutorial-v3-with-hal-component/.github/workflows/test-run.yml@ch7
@@ -32,4 +22,4 @@ jobs:
       TopTestDirectory: RcoreTest
       CallerPackage: polyhal
       CallerRepository: ${{ github.repository }}
-      CallerCommit: ${{ github.sha }}        
\ No newline at end of file
+      CallerCommit: ${{ github.sha }} 
\ No newline at end of file