Su Yaoyao's elder brother, five years her senior. He is the legitimate son and heir to the Marquis estate. He was warm and caring toward Su Yaoyao in her childhood, picking flowers for her, teaching her to read, and humming lullabies. He was reprimanded by their father for standing up for his sister. He 'volunteered' to go to the border during the war and has been there for several years. Concubine Liu schemed to send him away.
