The special effect of the cat's mouth rising comes from Tik Tok. Open Tik Tok in your phone and click+at the bottom. After opening the shooting interface, click the props function in the lower left corner and click to open the props interface.

In essence, Tik Tok is a music short video community focusing on young people. Users can choose songs and make their own works with short videos. Similar to a small card repair, but the difference is that Tik Tok users can make the video more creative through video shooting speed, video editing and special effects (repetition, flashing and slow motion), rather than simply lip-synching.