Xing Rumei is a five-year-old girl and An Zhe deskmate at kindergarten. She is described as wearing a pink floral jacket, with bright, lively eyes and a cheerful demeanor. Her eyes curve into crescents when she smiles, and she is not shy at all; several little girls are often seen surrounding her. She introduces herself to An Shijiu as Little Mei and eagerly asks if she can enter the kindergarten together with An Zhe. When Li Shuai bullies An Zhe by pushing him to the ground, Xing Rumei immediately rushes forward to protect him, standing in front of the fallen boy and loudly declaring that she will tell the teacher. Her actions demonstrate courage and loyalty despite her young age. She appears to be one of the few friends An Zhe has at kindergarten, showing kindness toward him when others are cruel.