In Empresses in the Palace, which episode did the emperor write for his beloved wife?

Empresses in the Palace Episode 45 The Emperor wrote to his beloved wife.

Harem is adapted from Wu's novel of the same name. The play is directed by Zheng Xiaolong, written by Wu, starring Sun Li, Chen Jianbin, Ethan, Ethan and Sun Xi, and produced by Beijing Television Art Center. The play tells the story of Zhen Xuan's growth from a simple girl who is ignorant of the world to a woman who is good at seeking power. In the 45th episode, Zhen Xuan learned that Guarga Emin had framed his father and went to the emperor for mercy, only to see the words written by the emperor to Chunyuan Queen. He sent them to Wan Wan to mourn his beloved wife, leaving Yu Siliang alone. He is often troubled by his own dreams and deep-rooted worries, which makes Guan Wan kind of clear, temporarily put aside other thoughts, except Wushan Feiyun.