"Fragmented information" brings short-term happiness to college students. College students brush Tik Tok because "fragmented information" will bring short-term happiness and freshness to college students. Unlike knowledge, which takes a long time to learn and digest, it brings quick and immediate benefits to college students, similar to playing games. When studying, college students can't predict when your future income will be realized and whether it can be realized, so college students don't want to make such long-term investment.