In Princess Zhu Huan Part II, which episode did the swallows leave the palace?

In the second episode 17, the swallow is in a very good mood. At that time, she celebrated by playing with fireworks sticks. She took a fireworks stick and somersaulted on the roof. A little spark jump also attracted the attention of the queen mother. And everyone is having a good time, chasing sparks. Shu Fangzhai is already very busy. One is not careful! However, the swallow knocked down the queen mother who came to look for fire, and burned her vest in panic. The queen mother was furious! Trying to drive swallows and crape myrtle out of the palace. Yongqi was eager to transform the swallow in order to reverse the prejudice of the Queen Mother, but there was a serious conflict between the swallow and Yongqi, and finally the swallow left the palace angrily.