The Swallow and Princess Wei Zi are still children.

Because the emperor didn't know that Wei Zi was her daughter at first, he had a good impression on Wei Zi, and the queen thought that Wei Zi was sent by the princess, fearing that it would be bad for him if the emperor made Wei Zi a princess. Besides, Wei Zi and Swallow are together. After the swallow entered the palace, he became an enemy of the queen and beat Sister Rong. Of course, both the Queen and Sister Rong hate her.