In this chapter, we learn that Cai Xing's younger sister is not his biological daughter, but rather a "righteous han chinese daughter" who has been raised lovingly by her father in the kingdom of the shuyu. Cai tells us that his younger sister has come to the kingdom because she wants to return to her homeland, but she has secretly boarded a ship without telling her family. After his father learns of this, he becomes seriously ill. This time, he goes to find Cai's sister in person, and he asks if Cai is really the royal of the kingdom. Cai says that he doesn't know since he was a "classy life" when he was younger. He says that if Cai and his sister say their names at the exact same time, the empress and the king will have less doubts. This makes us wonder if Cai has amnesia.