update

product/4dkk/en-us/_sidebar.md

@@ -4,6 +4,7 @@
 * FAQ
   * [Functions Description](dataexpired.md)
   * [Account Cancellation](accountcancellation.md)
+  * [Selfish Feature](selfie.md)
 * Scene Optimizer
   * [Apply mosaic effect](applymosaic.md)
   * [Add a watermark](watermark.md)

product/4dkk/en-us/selfie.md

@@ -0,0 +1,2 @@
+### How to use selfie feature?<!-- {docsify-ignore} -->
+[filename](videos/selfie.mp4 ':include :type=video width=100% height=100% controls')

product/4dkk/zh-cn/_sidebar.md

@@ -6,6 +6,7 @@
   * [部分功能说明](dataexpired.md)
   * [注销账号](accountcancellation.md)
   * [会员权益相关问题](membership.md)
+  * [合影功能](selfie.md)
 * 场景美化
   * [添加马赛克](addmosaic.md)
   * [添加水印](addwatermark.md)

product/4dkk/zh-cn/selfie.md

@@ -0,0 +1,2 @@
+### 如何使用合影功能？<!-- {docsify-ignore} -->
+[filename](videos/合影合成.mp4 ':include :type=video width=100% height=100% controls')