Eldest son of Commander Gu and Han Zecheng's close friend from military school. He has attractive single eyelids and handsome features. He is emotional and expressive, unlike his stoic father who admires Han Zecheng. He is married to Yu Wan and has two sons, Gu Yang and Gu Xu. He is curious about Han Zecheng's wife and warns him about his stepmother Zeng Yaohong's intentions.
