diff --git a/README.md b/README.md
index 7df09f94e06baa8eea72b300d69b012c5e3af863..be22af346b747c2e6f980b1cfb99580344dddedc 100644
--- a/README.md
+++ b/README.md
@@ -29,8 +29,9 @@ See [MindSpore README.md](https://gitee.com/mindspore/mindspore/blob/master/READ
 
 ### Build Standalone
 We suggest you build and run akg together with MindSpore. And we also provide a way to run case in standalone mode for convenience sake.
-Refer to [MindSpore Installation](https://www.mindspore.cn/install/en) for more information about compilation dependencies.
+Ascend platform is needed to build this mode. Refer to [MindSpore Installation](https://www.mindspore.cn/install/en) for more information about compilation dependencies.
   ```
+  git submodule update --init
   bash build.sh
   ```
 ## Run Standalone
diff --git a/docs/akg-design.png b/docs/akg-design.png
index 1bca3b427bf8c6421ae7f6fc8c11bb3d30c73392..620b805b8a3a083fded803084e45a124777069ca 100644
Binary files a/docs/akg-design.png and b/docs/akg-design.png differ