The first one is on Weibo. You can directly click on three points in Weibo, and then click Download and Save.

The second one is Tik Tok of Tik Tok. Click the small arrow in the lower right corner, then find the saved video, click it again, and automatically save it to the album.

Third, on Aauto Quicker or Little Red Book, he can keep pointing at the screen, and something will pop up in 3~6 seconds. You can save it by clicking Save Video.