How many episodes of Princess Pearl are there where people return?

This is not the plot where people go, but the swallow flying in the air. In the 36th episode of Princess New Zhu Huan, the emperor went out incognito, asked the swallow to recite poems and take her there, and asked her to recite an ancient battle song. Yongqi helped Swallow recite this poem successfully with a sword tactic, and the emperor agreed to take her with Wei Zi.