There is an unwritten rule in the professional circle of "Shan Hai". Whenever you are facing off against Jiang Jiu, you must pay attention to whether he is wearing a headband. If so, you must be careful when facing off.
If not, then run away! Don't fight him!
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Chen Yongwen: "What am I... Yours?"
Jiang Jiu: "You are my headband!"
Chen Yongwen: "...???"
Jiang Jiu (grin): "That way I can tie you to your head and compete in the competition!"