diff --git a/articles/20220317-nezha-d1.md b/articles/20220317-nezha-d1.md
index c655b7e768e74073a2be03f6556ea6b675ff60e4..90fbab3d96214e536daeafad7689d5591a517401 100644
--- a/articles/20220317-nezha-d1.md
+++ b/articles/20220317-nezha-d1.md
@@ -216,13 +216,13 @@ int main(int argc, char const *argv[])
 $ adb push hello_world ./
 ```
 
-![adb](https://s3.us-west-2.amazonaws.com/secure.notion-static.com/c80696d3-3860-4157-b272-41f0a6a88799/Untitled.png?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIAT73L2G45EIPT3X45%2F20220317%2Fus-west-2%2Fs3%2Faws4_request&X-Amz-Date=20220317T165734Z&X-Amz-Expires=86400&X-Amz-Signature=bb640411add3a1d36dac84e8e64a26c4d3322bf95ff2b874081f8459522a5bc2&X-Amz-SignedHeaders=host&response-content-disposition=filename%20%3D%22Untitled.png%22&x-id=GetObject)
+![adb](images/d1/adb.png)
 
 ### USB 摄像头拍照 Demo
 
 USB Camera demo 代码包，下载地址：[D1-H USB camera demo source code](https://www.aw-ol.com/downloads/resources/43)
 
-![usb camera](https://s3.us-west-2.amazonaws.com/secure.notion-static.com/ee5671bb-c15e-495a-ac58-035f0a8dc102/Untitled.png?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIAT73L2G45EIPT3X45%2F20220317%2Fus-west-2%2Fs3%2Faws4_request&X-Amz-Date=20220317T165912Z&X-Amz-Expires=86400&X-Amz-Signature=4bdf9de0e0887dbea4af8663d5ce72627efe128036cec78ad73d78d4316e654c&X-Amz-SignedHeaders=host&response-content-disposition=filename%20%3D%22Untitled.png%22&x-id=GetObject)
+![usb camera](images/d1/usb_camera.png)
 
 使用公司的 UVC（webcam) 摄像头测试可以抓取图像。
 
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diff --git a/ppt/RISC-V Specs.pptx b/ppt/RISC-V Specs.pptx
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