The bigger deal (bigger than the tracking that people usually focus on) might be how the algorithm is specifically tuned to reward dumb content in the US, compared to rewarding STEM and other educational content in China. One minute video that explains: https://www.youtube.com/watch?v=Hus9fWz0RRk Further reading: https://www.opindia.com/2022/07/tiktok-china-engineering-oth...
The China distortion field
Anything normally would be laughed at would be considered dead true when comes to China...
Use your f*king mind...