Sang Zhi's brother.Aloof, arrogant and bitchy, Duan Jiaxu's roommate. After graduation, he opened a bar with his friends. He has a handsome appearance and a happy family. He has a loose personality. He is loyal to his brothers and disrespectful to his sister. He seems impatient but is actuallyHe is very caring and caring, and the siblings exchange witty and hilarious jokes every day. When it comes to relationships, he believes that one person will last a lifetime.