update docs

Signed-off-by: Nshawn_he <shawn.he@huawei.com>

README.md

@@ -31,3 +31,16 @@ This repository stores device and application development documents provided by
 OpenHarmony_v1.x_release: OpenHarmony v1.1.4 LTS. [Learn more](en/release-notes/OpenHarmony-v1-1-4-LTS.md)
 
 [More versions](en/release-notes/)
+
+
+## Third-Party Open-Source Software and License Notice
+
+3rd-Party-License: [Third-Party Open-Source Software and License Notice](contribute/third-party-open-source-software-and-license-notice.md)
+
+## How to Contribute
+
+A great open-source project wouldn't be possible without the hard work of many contributors. We'd like to invite anyone from around the world to  [participate](contribute/contribution.md)  in this exciting journey, and we're grateful for your time, passion, and efforts!
+
+You can evaluate available documents, make simple modifications, provide feedback on document quality, and contribute your original content. For details, see  [Documentation Contribution](contribute/documentation-contribution.md).
+
+Excellent contributors will be awarded and the contributions will be publicized in the developer community.

en/OpenHarmony-Overview.md

-# OpenHarmony<a name="EN-US_TOPIC_0000001158661243"></a>
+# OpenHarmony
 
 ## Introduction<a name="section1270210396435"></a>
 
@@ -331,7 +331,8 @@ The following table describes the subsystems of OpenHarmony. For details about t
 
 ## Getting Started<a name="section44681652104210"></a>
 
-For details, see  [device-dev/quick-start/Readme-EN.md](device-dev/quick-start/Readme-EN.md).
+- Device development: [device-dev/quick-start/Readme.md](device-dev/quick-start/Readme.md)
+- Application development: [application-dev/quick-start/Readme.md](application-dev/quick-start/Readme.md)
 
 ## Code Repository Addresses<a name="section107651249181914"></a>
 
@@ -374,4 +375,3 @@ Website:
 Email:
 
 contact@openharmony.io
-

en/readme.md

-# Overview
-
-This project stores OpenHarmony documentation, including the quick start guide, development guides, and API reference. We appreciate your contribution to the OpenHarmony documentation.
-
-## Contents
-
-- [OpenHarmony Overview](OpenHarmony-Overview.md)
-- Device development
-    - Mini and Small System Development Guidelines \(Reference Memory < 128 MB\)
-      - Device development
-        - **overview**:  [Device Development Overview](device-dev/Readme-EN.md)
-        - **quick-start**:  [Quick Start](device-dev/quick-start/Readme-EN.md)  \(covering environment setup, source code acquisition, build, and burning\)
-        - Basic development capabilities
-          - **Kernel**:  [Kernel for Mini Systems](device-dev/kernel/kernel-mini.md)
-          - **Kernel：**[Kernel for Small Systems](device-dev/kernel/kernel-small.md)
-          - **Drivers**:  [drivers](device-dev/driver/Readme-EN.md)
-          - **Subsystems**:  [subsystems](device-dev/subsystems/Readme-EN.md)  \(such as compilation and building, graphics, DFX, and XTS\)
-          - **Security**:  [privacy and security](device-dev/security/Readme-EN.md)
-        - **guide**:  
-          - [WLAN-connected Products](device-dev/guide/device-wlan.md)  \(LED peripheral control and third-party SDK integration\)
-          - [Screenless Cameras](device-dev/guide/device-iotcamera-control.md)  \(camera control\)
-          - [Cameras with a Screen](device-dev/guide/device-camera.md)  \(screen and camera control, visual application development\)
-        - **porting**:
-          - [Third-Party Library Porting Guide for Mini and Small Systems](device-dev/porting/porting-thirdparty.md) 
-          - [Mini System SoC Porting Guide](device-dev/porting/porting-minichip.md)
-          - [Small System SoC Porting Guide](device-dev/porting/porting-smallchip.md)
-        - **bundles**: 
-          - [HPM Bundle Development Specifications](device-dev/bundles/bundles-standard-rules.md)
-          - [HPM Bundle Development Guidelines](device-dev/bundles/bundles-guide.md)
-          - [HPM User Guide](device-dev/bundles/bundles-demo.md)
-    - Standard System Development Guidelines \(Reference Memory ≥ 128 MB\)
-      - Device development
-        - **overview**:  [Device Development Overview](device-dev/Readme-EN.md)
-        - **quick-start**:  [Quick Start](device-dev/quick-start/quickstart-standard.md)  \(covering environment setup, source code acquisition, build, and burning\)
-        - Basic development capabilities
-          - **Kernel**:  [Kernel for the Standard System](device-dev/kernel/kernel-standard.md)
-          - **Drivers**:  [Drivers](device-dev/driver/Readme-EN.md)
-          - **Subsystems**:  [Subsystems](device-dev/subsystems/Readme-EN.md)  \(such as compilation and building, graphics, DFX, and XTS\)
-          - **Security**:  [Privacy and Security](device-dev/security/Readme-EN.md)
-        - **guide**:
-          - [Development Guidelines on Clock Apps](device-dev/guide/device-clock-guide.md)
-          - [Development Example for Platform Drivers](device-dev/guide/device-driver-demo.md)
-          - [Development Example for Peripheral Drivers](device-dev/guide/device-outerdriver-demo.md)
-        - **porting**:  
-          - [Standard  System SoC Porting Guide](device-dev/porting/standard-system-porting-guide.md)
-          - [A Method for Rapidly Porting the OpenHarmony Linux Kernel ](device-dev/porting/porting-linux-kernel.md)
-        - **bundles**: 
-          - [HPM Bundle Development Specifications](device-dev/bundles/bundles-standard-rules.md)
-          - [HPM Bundle Development Guidelines](device-dev/bundles/bundles-guide.md)
-          - [HPM User Guide](device-dev/bundles/bundles-demo.md)
-    - [FAQs](device-dev/faqs/Readme-EN.md)
-
-
--   App development
-    -   **Overview**:  [Application Development Overview](application-dev/application-dev-guide.md)
-    -   **quick-start**:  [Quick Start](application-dev/quick-start/Readme-EN.md)
-    -   **ui**:  [UI](application-dev/ui/Readme-EN.md)
-    -   **media**:  [Media](application-dev/media/Readme-EN.md)
-    -   **security**: [Security](application-dev/security/Readme-EN.md)
-    -   **connectivity**:  [Connectivity](application-dev/connectivity/Readme-EN.md)
-    -   **Database**：[Data Management](application-dev/database/Readme-CN.md)
-    -   **usb**: [USB Service](application-dev//usb/Readme-EN.md)
-    -   **dfx**:  [DFX](application-dev/dfx/Readme-EN.md)
-    -   **reference**:  [Development References](application-dev/reference/Readme-EN.md)
--   **glossary**:  [Glossary](device-dev/glossary/glossary.md)
-
-## Version Change History
-
-For details, see  [OpenHarmony Release Notes](release-notes/Readme.md).
-
-## Third-Party Open-Source Software and License Notice
-
-3rd-Party-License: [Third-Party Open-Source Software and License Notice](contribute/third-party-open-source-software-and-license-notice.md)
-
-
-## How to Contribute
-
-A great open-source project wouldn't be possible without the hard work of many contributors. We'd like to invite anyone from around the world to  [participate](contribute/contribution.md)  in this exciting journey, and we're grateful for your time, passion, and efforts!
-
-You can evaluate available documents, make simple modifications, provide feedback on document quality, and contribute your original content. For details, see  [Documentation Contribution](contribute/documentation-contribution.md).
-
-Excellent contributors will be awarded and the contributions will be publicized in the developer community.
-
+# OpenHarmony Documentation
+
+This repository stores a complete range of OpenHarmony documentation. The content outline is as follows:
+
+- OpenHarmony Development
+  - [Device Development](device-dev/Readme.md)
+  - [Application Development](application-dev/Readme-CN.md)
+  - [Release Notes](release-notes/Readme.md)
+  - [Subsystems](./readme)
+- OpenHarmony Contribution
+  - [How to Contribute](contribute/contribution.md)
+  - [OpenHarmony Part and API Design Reference](./design)