[doc] update open-sora demo
diff --git a/README.md b/README.md
index 2f6aa60678ef..7c234b15e75e 100644
--- a/README.md
+++ b/README.md
@@ -133,14 +133,13 @@ distributed training and inference in a few lines.
 [[HuggingFace model weights]](https://huggingface.co/hpcai-tech/Open-Sora)
 [[Demo]](https://github.com/hpcaitech/Open-Sora?tab=readme-ov-file#-latest-demo)
 
-<p id="diffusion_demo" align="center">
-<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/applications/sora/open-sora-1.png" width=600/>
-</p>
-
-<p id="diffusion_demo" align="center">
-<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/applications/sora/open-sora-2.png" width=600/>
-</p>
+<div align="center">
+   <a href="https://www.youtube.com/watch?v=iDTxepqixuc">
+   <img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/applications/sora/sora-demo.png" width="700" />
+   </a>
+</div>
 
+<p align="right">(<a href="#top">back to top</a>)</p>
 
 ### Colossal-LLaMA-2
 
diff --git a/applications/README.md b/applications/README.md
index 8abe1e52d96c..120767d5c9ea 100644
--- a/applications/README.md
+++ b/applications/README.md
@@ -4,7 +4,7 @@ This directory contains the applications that are powered by Colossal-AI.
 
 The list of applications include:
 
-- [X] [Open-Sora](https://github.com/hpcaitech/Open-Sora): Sora Replication Solution with 46% Cost Reduction, Sequence Expansion to Nearly a Million
+- [X] [Open-Sora](https://github.com/hpcaitech/Open-Sora): Revealing Complete Model Parameters, Training Details, and Everything for Sora-like Video Generation Models
 - [X] [Colossal-LLaMA-2](./Colossal-LLaMA-2/): Continual Pre-training of LLaMA-2.
 - [X] [ColossalEval](./ColossalEval): Evaluation Pipeline for LLMs.
 - [X] [ColossalChat](./Chat/README.md): Replication of ChatGPT with RLHF.
diff --git a/docs/README-zh-Hans.md b/docs/README-zh-Hans.md
index 7d267b16f442..93045ea6adc6 100644
--- a/docs/README-zh-Hans.md
+++ b/docs/README-zh-Hans.md
@@ -128,13 +128,11 @@ Colossal-AI 为您提供了一系列并行组件。我们的目标是让您的
 [[模型权重]](https://huggingface.co/hpcai-tech/Open-Sora)
 [[演示样例]](https://github.com/hpcaitech/Open-Sora?tab=readme-ov-file#-latest-demo)
 
-<p id="diffusion_demo" align="center">
-<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/applications/sora/open-sora-1.png" width=600/>
-</p>
-
-<p id="diffusion_demo" align="center">
-<img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/applications/sora/open-sora-2.png" width=600/>
-</p>
+<div align="center">
+   <a href="https://www.bilibili.com/video/BV1dW421c7MN">
+   <img src="https://raw.githubusercontent.com/hpcaitech/public_assets/main/applications/sora/sora-demo-cn.png" width="700" />
+   </a>
+</div>
 
 ### Colossal-LLaMA-2
 

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