The son-in-law who has been here for ten years has been treated coldly, but Chen Yanchuan has never said a word in defense. On the day of the wedding, he showed the ancestral "Royal Seal Inheritance Letter" in public, and the Lin family was shocked. Only then did Lin Sutang learn that the son-in-law she thought was the legal successor to the last bloodline of the late Qing royal family. The national treasure hidden by the father, the blood debt of the second aunt, and the undercover identity of Fa Xiao all came to light at this moment. This is not only an identity counterattack, but also the reckoning of the entire family's centuries-old sins.