“Bang Jing” in the title is an idealized model, not for specific people, just to explain the problem more clearly, so it is not a hat.
Labeling is not a completely negative act. Sometimes, it can help us classify and think.
0:12 No one is really… right? No way? No way? No way?
0:29 He is in a hurry, he is in a hurry
0:55 Well-known, little pink, Li Zhongke and other buttoned hats
1:34 Pure passerby
1:58 rub the heat, wash the floor for flow
2:54 Buttocks determine head, buttocks are crooked