diff --git a/README.md b/README.md
index 7237d98..3e7c8e0 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,15 @@
 | [可解释性 AI 系统](chapter_explainable_AI/) | 可解释 AI 方法与落地实践 |
 | [机器人学习系统](chapter_rl_sys/) | 机器人感知、规划、控制与系统安全 |
 
+## 更新日志
+
+| 日期 | 事件 |
+|------|------|
+| 2022-01 | 项目初始化，开始中文内容编写 |
+| 2022-05 | 完成扩展篇各章节（联邦学习、强化学习、可解释 AI） |
+| 2023-05 | 适配 MindSpore 2.0 |
+| 2026-03 | 中英文双语构建架构重构；启动英文版 |
+
 ## 构建指南
 
 ### 环境依赖
@@ -127,6 +136,26 @@ sh build_html.sh
   扫码加入微信交流群
 </p>
 
+## 引用
+
+如果本书对您的研究或工作有所帮助，请使用以下格式引用：
+
+**文本格式：**
+
+> OpenMLSys Team. *机器学习系统：设计和实现*. 2022. https://openmlsys.github.io/
+
+**BibTeX：**
+
+```bibtex
+@book{openmlsys2022,
+  title     = {机器学习系统：设计和实现},
+  author    = {OpenMLSys Team},
+  year      = {2022},
+  url       = {https://openmlsys.github.io/},
+  note      = {开源教材，\url{https://github.com/openmlsys/openmlsys-zh}}
+}
+```
+
 ## 许可证
 
 本项目采用 [知识共享 署名-非商业性使用-相同方式共享 4.0 国际许可协议](https://creativecommons.org/licenses/by-nc-sa/4.0/deed.zh) 授权。
diff --git a/README_EN.md b/README_EN.md
index e0cbde4..2511c64 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -27,7 +27,9 @@
 
 An open-source book explaining the design principles and implementation experience of modern machine learning systems, covering the complete technology stack from programming interfaces and computational graphs to compilers and distributed training.
 
-**Read Online:** [openmlsys.github.io](https://openmlsys.github.io/)
+**English version 1 (stable):** [openmlsys.github.io/html-en/](https://openmlsys.github.io/html-en/)
+
+**English version 2:** Under reconstruction.
 
 ## Table of Contents
 
@@ -76,6 +78,15 @@ The book is organized into three parts: Fundamentals, Advanced Topics, and Exten
 | [Explainable AI Systems](chapter_explainable_AI/) | XAI methods and production practices |
 | [Robot Learning Systems](chapter_rl_sys/) | Robot perception, planning, control, and system safety |
 
+## Changelog
+
+| Date | Event |
+|------|-------|
+| 2022-01 | Project initialized; Chinese content writing begins |
+| 2022-05 | Extension chapters released (Federated Learning, RL Systems, Explainable AI) |
+| 2023-05 | Codebase adapted to MindSpore 2.0 |
+| 2026-03 | Bilingual (CN/EN) build architecture refactored; English version launched |
+
 ## Build Guide
 
 ### Prerequisites
@@ -123,6 +134,26 @@ Before contributing, please read:
 
 Join our WeChat group by scanning the QR code in [info/mlsys_group.png](info/mlsys_group.png).
 
+## Citation
+
+If this book has been helpful to your research or work, please cite it as:
+
+**Plain text:**
+
+> OpenMLSys Team. *Machine Learning Systems: Design and Implementation*. 2022. https://openmlsys.github.io/
+
+**BibTeX:**
+
+```bibtex
+@book{openmlsys2022,
+  title     = {Machine Learning Systems: Design and Implementation},
+  author    = {OpenMLSys Team},
+  year      = {2022},
+  url       = {https://openmlsys.github.io/},
+  note      = {Open-source textbook, \url{https://github.com/openmlsys/openmlsys-zh}}
+}
+```
+
 ## License
 
 This project is licensed under the [Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-nc-sa/4.0/).