Young Lord (first young master) of the Duke Rong household. The elder of the two Gu brothers who protected Ye Wanshu for ten years. He was once gentle and affectionate toward her but has grown irritated with her current behavior. He attempted to marry Jiang Yueling at Ye Wanshu's coming-of-age banquet in their past life. He is the one betrothed to Ye Wanshu according to the family arrangement.