Male, also called Atan, Xu Chenghuai's younger brother and Jiang Hua's brother-in-law. He is a young man in his early twenties wearing black-rimmed glasses, about the same height as Xu Chenghuai but thinner. His personality is sunny and lively, daring to love and hate, full of a sense of justice. He dotes on his niece and nephew Yunkai and Yunshu.
