Gu Ningxi's father, a marquis who is past forty but remains dignified, handsome, and imposing. He is strict in disciplining his sons but gentler with Xi'er (Gu Ningxi). He represents the family's political stance, having aligned with the Eastern Palace. He is composed and pragmatic about court affairs, advising Gu Ningxi to simply fulfill her duties since His Majesty values both the Crown Prince and Prince Zhao.