The competition between America and China is infiltrating college dorm rooms. Citing national security concerns, at least 29 states have banned TikTok, the video app owned by ByteDance, a Chinese firm, on government devices. Many universities also banned students from using the app on campus wifi. In practice, that means students will use data, not wifi, to watch videos of friends revealing their outfits for sorority recruitment. But young people’s surprise over the TikTok bans may also reveal how differently they view China from their parents.