diff --git a/.gitee/ISSUE_TEMPLATE.zh-CN.md b/.gitee/ISSUE_TEMPLATE.zh-CN.md
deleted file mode 100755
index f09d98d..0000000
--- a/.gitee/ISSUE_TEMPLATE.zh-CN.md
+++ /dev/null
@@ -1,13 +0,0 @@
-### 该问题是怎么引起的？
-
-
-
-### 重现步骤
-
-
-
-### 报错信息
-
-
-
-
diff --git a/.gitee/PULL_REQUEST_TEMPLATE.zh-CN.md b/.gitee/PULL_REQUEST_TEMPLATE.zh-CN.md
deleted file mode 100755
index 33948fd..0000000
--- a/.gitee/PULL_REQUEST_TEMPLATE.zh-CN.md
+++ /dev/null
@@ -1,15 +0,0 @@
-### 相关的Issue
-
-
-### 原因（目的、解决的问题等）
-
-
-### 描述（做了什么，变更了什么）
-
-
-### 测试用例（新增、改动、可能影响的功能）
-
-
-
-
-
diff --git a/LICENSE b/LICENSE
old mode 100755
new mode 100644
diff --git a/README.md b/README.md
new file mode 100755
index 0000000..de3f0e4
--- /dev/null
+++ b/README.md
@@ -0,0 +1,30 @@
+# IoT Subsystem<a name="EN-US_TOPIC_0000001085756528"></a>
+
+-   [Introduction](#section11660541593)
+-   [Directory Structure](#section1464106163817)
+-   [Repositories Involved](#section1718733212019)
+
+## Introduction<a name="section11660541593"></a>
+
+The IoT subsystem provides samples for integrating third-party SDKs. For details, see  [Third-Party SDK Integration](https://device.harmonyos.com/en/docs/develop/demo/oem_device_wifi_sdk-0000001054412155).
+
+## Directory Structure<a name="section1464106163817"></a>
+
+```
+domains/iot/                              # IoT subsystem
+└── link
+    ├── BUILD.gn                       # Build script
+    ├── demolink                       # Code for adapting third-party APIs to OpenHarmonyOS
+    │   ├── BUILD.gn
+    │   ├── demosdk_adapter.c
+    │   └── demosdk_adapter.h
+    └── libbuild                       # Code for building third-party SDKs
+        ├── BUILD.gn
+        ├── demosdk.c
+        └── demosdk.h
+```
+
+## Repositories Involved<a name="section1718733212019"></a>
+
+iot\_link
+
diff --git a/README_zh.md b/README_zh.md
new file mode 100755
index 0000000..e93492d
--- /dev/null
+++ b/README_zh.md
@@ -0,0 +1,30 @@
+# IOT子系统<a name="ZH-CN_TOPIC_0000001085756528"></a>
+
+-   [简介](#section11660541593)
+-   [目录](#section1464106163817)
+-   [涉及仓](#section1718733212019)
+
+## 简介<a name="section11660541593"></a>
+
+IOT子系统为平台开发者提供了集成三方SDK的示例参考，具体集成方法参见《[集成三方SDK](https://device.harmonyos.com/cn/docs/develop/demo/oem_device_wifi_sdk-0000001054412155)》指导文档。
+
+## 目录<a name="section1464106163817"></a>
+
+```
+domains/iot/                              # 仓目录
+└── link
+    ├── BUILD.gn                       # 构建脚本
+    ├── demolink                       # 三方厂商与平台接口的适配层构建目录
+    │   ├── BUILD.gn
+    │   ├── demosdk_adapter.c
+    │   └── demosdk_adapter.h
+    └── libbuild                       # 三方厂商SDK构建目录
+        ├── BUILD.gn
+        ├── demosdk.c
+        └── demosdk.h
+```
+
+## 涉及仓<a name="section1718733212019"></a>
+
+iot\_link
+
diff --git a/demolink/BUILD.gn b/demolink/BUILD.gn
index 8da7e7a..ad6cf1d 100755
--- a/demolink/BUILD.gn
+++ b/demolink/BUILD.gn
@@ -9,14 +9,14 @@
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
-# limitations under the License.
+# limitations under the License.
 
 import("//build/lite/config/component/lite_component.gni")
 
 static_library("demolinkadapter") {
   sources = [ "demosdk_adapter.c" ]
   include_dirs = [
-    "//kernel/liteos_m/kal",
+    "//kernel/liteos_m/kal/cmsis",
     "//domains/iot/link/demolink",
   ]
 }
diff --git a/demolink/demosdk_adapter.c b/demolink/demosdk_adapter.c
index 7e81361..aecd2a7 100755
--- a/demolink/demosdk_adapter.c
+++ b/demolink/demosdk_adapter.c
@@ -16,8 +16,6 @@
 #include "demosdk_adapter.h"
 #include <stdio.h>
 
-#include "kal.h"
-
 #include "cmsis_os2.h"
 
 #define MS_CNT 1000
@@ -53,6 +51,6 @@ int DemoSdkCreateTask(unsigned int *handle, const struct TaskPara *para)
 
 void DemoSdkSleepMs(int ms)
 {
-    KalDelayUs(MS_CNT * ms);
+    usleep(MS_CNT * ms);
 }