1. Yunshui Zen Heart

and Yunshui Flower God are both good choices. I prefer the "Heart Sutra" because it has no big ups and downs and is easy to cut and merge. To audition, you can go to hi.baidu.com/panying to find music of a fixed length. Others such as Spring River Flower Moonlight Night, Fishing Boat Singing Evening, etc. are also popular music.

2. I recommend that you create video special effects yourself based on the video content, because no matter how good someone else’s stuff is, it’s not as targeted as what you make yourself. I don’t know what software you use to make Tai Chi videos. In VideoStudio software, transitions, special effects, subtitle animations, picture-in-picture, etc. can be easily produced.