"Lie-Xue" is a term used to describe a situation in which two people in the same industry split ways. In this case, the two people are xiangsheng, which means "two people of the same race" . In other words, they're two people who work in a very specific industry. So, for example, in the "xiangsheng" industry, there's a guy named chang le and his wife, who've been married for a long time, but they've recently gotten into a fight and are now bickering about who should be in charge of the household. Aww, that's not cool. It's like being in a real-life relationship. The two people have to accept each other's roles, work hard together, and get along well. That's the way it's supposed to be in the real world, according to the narrator. Ooh, that sounds a lot like the way we're supposed to act in real life. The narrator then launches into a long monologue about how he's always been a good kid, but now he feels like a creep creeping around the house. He wonders who's following him around like that all the time, and he wonders if she's happy to see him creep around. He's worried that she'll be jealous when she finds out that he is following her around like this. He tries to think of a way to back down, but he can't. He just feels defeated.