Once upon a time, the narrator tells us, he used to look forward to going to his big sister's house every weekend. He'd be carrying a bag full of belongings, and his dad would be there, too. He was a little kid back then, and he'd tell his dad about how good his little brother was, and how his dad was too "free-spirited" to be a "good teacher" . He tells his dad that he's not going to do it again, because he realizes that his little sister is "my nemesis for life" , and that she's a "little fool" who knows when to "commit a crime" without being caught . Mr. Lu tells the narrator that his relationship with his sister has been going on for years, despite her "dull and childishness," and that he has become more and more "equally matched" with her. He says that his dad will be leaving soon, so it'll be hard for him to find a new teacher, but he'll try to practice with her, since she'll probably be looking for one anyway. He doesn't want to charge her, he tells her, because she is "looking for a teacher" anyway. The narrator tells his father that he can practice with him if he comes to his house, and then he tells him that he is looking for someone else. He explains that he was always sure that his sister and