The doctor says that he's going to have a good night's sleep, and that's why he doesn't want to hang out with the two brothers. He tells cheng to be careful not to get close to the brothers, because one of them is a "flat-headed guy" , and the other is a friend of cheng's who used to beat cheng. Unsure of what to make of this, cheng runs off to get the doctor. When he gets there, he finds out that the doctor has told him that he can have a "good rest" these days, and cheng tells him not to "get too close" to the "two brothers" . He also tells him that cheng