Princess Zhu Huan, Part III, Wei Zi hits the coffin. Which episode is it?

30 episodes. According to the query of iQiyi official website, in the 30th episode of the drama, outside Beijing, Qianlong rode a swallow, Yongqi took Erkang's coffin, and Wei Zi couldn't accept it and bumped into it. The play tells the story of a border war. Erkang went south with the army, and Wei Zi faced the test of where to go.