chapter 15 you sick

Cyneburg Wu asked Andi Wu, "Andi, who is the math teacher up front?"
Andi pointed to a middle-aged man with a crew cut, sitting in the front. He was dressed in a Zhongshan suit and had a very traditional appearance.
Cyneburg Wu immediately went over to greet the teacher, "Hello, teacher. I am Andi Wu's brother, Cyneburg Wu."
The teacher quickly nodded, "Ah, Andi Wu's brother, hello. Andi has always been doing well in her studies, especially in the last math test where she...