When haofeng asks what is wrong with his twin sister, he learns that she has not shown up for class and borrowed money from the club. He asks her to pay him back immediately, but she refuses to do so. He tells her that they are twins and asks her not to go overboard. She tells him that the doctor has told her that it is caused by the drug ritalin, which she has been using to treat her anxiety. Worried that his sister is addicted to the drug, he tells her to stop taking it. He says that she is still an impressive student and that she does not need to risk her life to get good grades. .