Hello!I come from China. In my country, Tiktok is the most popular app. Because most of the people in China are tired when they get home. They think using Tiktok to watching short video is relaxing. However, they can spend a lot of time watching short video. It results they do less work. And students can't finish their homework.So they sleep in class,and they can't get good grades.That's all, thank you.