Let me take Weibo 12. 1 1.0 as an example to demonstrate it in detail:
1. Click the Weibo icon on the mobile phone desktop to enter Weibo.
2. Click the discovery option in the middle of the bottom.
3. Click the video option at the top.
4. Find the video to save, click Play, and then right-click ... (Here is the share button).
5. Click Save to Album, and the video will be saved.
Note: Some videos can't be saved because the blogger has set permissions. They are original videos of bloggers. Everyone should respect copyright.