diff --git a/.all-contributorsrc b/.all-contributorsrc
index 233fb973..3e036be6 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -381,7 +381,8 @@
       "profile": "https://github.com/WeiguoMa",
       "contributions": [
         "code",
-        "test"
+        "test",
+        "example"
       ]
     }
   ],
diff --git a/README.md b/README.md
index 0261d019..3d639164 100644
--- a/README.md
+++ b/README.md
@@ -309,7 +309,7 @@ TensorCircuit-NG is open source, released under the Apache License, Version 2.0.
       <td align="center" valign="top" width="16.66%"><a href="https://github.com/Stellogic"><img src="https://avatars.githubusercontent.com/u/186928579?v=4?s=100" width="100px;" alt="Stellogic"/><br /><sub><b>Stellogic</b></sub></a><br /><a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=Stellogic" title="Code">💻</a> <a href="#example-Stellogic" title="Examples">💡</a> <a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=Stellogic" title="Tests">⚠️</a> <a href="#tutorial-Stellogic" title="Tutorials">✅</a></td>
       <td align="center" valign="top" width="16.66%"><a href="https://github.com/Charlespkuer"><img src="https://avatars.githubusercontent.com/u/112697147?v=4?s=100" width="100px;" alt="Huang"/><br /><sub><b>Huang</b></sub></a><br /><a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=Charlespkuer" title="Code">💻</a> <a href="#example-Charlespkuer" title="Examples">💡</a> <a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=Charlespkuer" title="Tests">⚠️</a></td>
       <td align="center" valign="top" width="16.66%"><a href="https://github.com/Huang-Xu-Yang"><img src="https://avatars.githubusercontent.com/u/227286661?v=4?s=100" width="100px;" alt="Huang-Xu-Yang"/><br /><sub><b>Huang-Xu-Yang</b></sub></a><br /><a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=Huang-Xu-Yang" title="Code">💻</a> <a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=Huang-Xu-Yang" title="Tests">⚠️</a></td>
-      <td align="center" valign="top" width="16.66%"><a href="https://github.com/WeiguoMa"><img src="https://avatars.githubusercontent.com/u/108172530?v=4?s=100" width="100px;" alt="Weiguo_M"/><br /><sub><b>Weiguo_M</b></sub></a><br /><a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=WeiguoMa" title="Code">💻</a> <a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=WeiguoMa" title="Tests">⚠️</a></td>
+      <td align="center" valign="top" width="16.66%"><a href="https://github.com/WeiguoMa"><img src="https://avatars.githubusercontent.com/u/108172530?v=4?s=100" width="100px;" alt="Weiguo_M"/><br /><sub><b>Weiguo_M</b></sub></a><br /><a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=WeiguoMa" title="Code">💻</a> <a href="https://github.com/tensorcircuit/tensorcircuit-ng/commits?author=WeiguoMa" title="Tests">⚠️</a> <a href="#example-WeiguoMa" title="Examples">💡</a></td>
     </tr>
   </tbody>
 </table>