Xu Zhuzhu and Qin Chuyu actually didn't know each other. Qin Chuyu and Little Monk were in the same class - a class for average students. His father introduced them, and he couldn't disobey him.
Little Monk doesn't like Qin Chuyu. One reason being, Qin Chuyu is spoiled and unreasonable; the second reason is that whenever he's with Qin Chuyu, no one pays attention to what he's saying. Little Monk doesn't understand what this feeling is, but he instinctively feels uncomfortable.
Xu Zhuzhu has no particular feelings towards Qin Chuyu.
However, he could sense that his friends were not welcoming towards Qin Chuyu.
Feeling like he did something wrong, he said apologetically, "I'm sorry, I won't bring him next time."
"It's okay. For your sake, I can play with him." Little Monk is a generous child. As long as Qin Chuyu doesn't try to steal Jiaojiao from him, he could negotiate everything else.
"What are you guys playing?" Qin Chuyu asked.
Xu Zhuzhu said, "We are building houses."