diff --git a/assets/picoclaw_detect_person.mp4 b/assets/picoclaw_detect_person.mp4
deleted file mode 100644
index b56999689..000000000
Binary files a/assets/picoclaw_detect_person.mp4 and /dev/null differ
diff --git a/assets/wechat.png b/assets/wechat.png
index e30c34e4e..1900c7556 100644
Binary files a/assets/wechat.png and b/assets/wechat.png differ