Prince Rong and Princess Rong have only one daughter, Yongping. After welcoming Xu Yin as their son-in-law, Prince Rong purchased a house on the west side of the Prince Manor for Xu Yin to settle in.
However, Xu Yin insisted on refusing the gift from the Prince Manor, opting to pay for it himself.
After ranking high in the Imperial Examination, he received many rewards from the emperor. Later, he entered the Hanlin Academy and became a revered editor there. Further ahead, he was awarded for presenting the "Seven Strategies for Military Governance," gaining both fame and fortune. Hence, he built some wealth over time.
Therefore, although this son-in-law comes from humble beginnings, his position at court was earned by himself, compelling the Prince Rong's Mansion to treat him with due respect rather than regard him as a "live-in son-in-law."
As Xu Yin entered the Prince Rong's Mansion, someone was already there to welcome him.
