Update CONTRIBUTING.md

Author: OneOhCloud

CONTRIBUTING.md

@@ -1,5 +1,47 @@
 # Contributing Guide
 
+Thank you for your interest and contribution to this project!  
+To ensure the stability, robustness, and good user experience of this project, please read the following guidelines before submitting a PR or feature request.  
+
+## Accepted PRs
+- Stability improvements  
+- Robustness enhancements  
+- Bug fixes  
+
+PRs of these types can be submitted directly.  
+
+## Feature Request Process
+If you want to propose a new feature, please **open an Issue for discussion first**.  
+After we evaluate whether the feature is necessary, you can start development. This helps avoid wasting your valuable time.  
+
+## Feature Acceptance Criteria
+
+### ✅ Welcomed Features
+1. **General-purpose features**  
+   - High-frequency needs for non-technical users  
+   - No additional learning cost or extra steps required  
+
+2. **Advanced features**  
+   - High-frequency needs for technical users (e.g., bypass routing, custom configurations)  
+   - Moderate increase in learning cost or steps is acceptable  
+   - Provided as toggles in the **Developer Page**, not shown in regular user-facing interfaces  
+
+### ❌ Features We Do Not Accept
+- Very niche, overly customized, self-entertaining, or whimsical requests  
+- Features that involve modifications to the **sing-box core code**  
+- Even with highly polished code, such PRs will not be accepted  
+
+---
+
+
+Thank you for your understanding and support!  
+Let’s work together to make this project more stable, user-friendly, and sustainable 🚀
+
+---
+
+
+# 贡献指南
+
 感谢你对本项目的关注与贡献！  
 为了保证项目的稳定性、健壮性，以及良好的用户体验，请在提交 PR 或功能请求前阅读以下指南。
 
@@ -8,11 +50,11 @@
 - 健壮性提升  
 - Bug 修复  
 
-这类 PR 可以直接提交。
+以上类型的 PR 可以直接提交。
 
 ## 功能请求流程
 如果你希望添加新功能，请 **先提交 Issue 进行讨论**。  
-在我们评估功能的必要性后，再由你开发会更合适，避免浪费你的宝贵时间。
+在我们评估功能的必要性后，再由你开发会更合适，避免浪费你的宝贵时间。  
 
 ## 功能接受标准
 
@@ -31,7 +73,9 @@
 - 涉及 **sing-box 内核代码修改** 的功能  
 - 即使代码完成度很高，我们也不会接受此类 PR  
 
+
 ---
 
 感谢理解与支持！  
-让我们一起让本项目更加稳定、易用和可持续发展 🚀
+让我们一起让本项目更加稳定、易用和可持续发展 🚀  
+