Which episode did the new princess Zhu Huan write that moved the emperor?

The second1set. According to the query of TV Cat Network, it was 2 1 set that touched the emperor by writing the composition "Princess Pearl". In episode 2 1, the emperor praised Wei Zi, and the swallow accidentally burned the upcoming "ceremony". The queen received a report that Shu Fangzhai had been singing every night and dragged the emperor to Shu Fangzhai. The emperor was very moved by the completion of the swallow's composition, especially praised Wei Zi, and ordered the whole palace to learn to sing "Great Gift and Good Luck".