Episode 21 recap: Tang Wanwan lost her child.

Tang Wanwan's child is gone, and Xiao Xuan Yi is also very sad. He comforts her, saying that they will have another child in the future. Xiao Xuan Yi's subordinate informs him that Doctor Sun committed suicide at home and they found a notebook in his house. Xiao Xuan Yi opens it and discovers that it mentions Tang Wanwan's child being two months old, which confirms that it was indeed his child. Princess Jingyue and the military advisor discussed this matter and had Lu Qiao hide musk in the gift they gave to Xiao Xuan Yi, which Tang Wanwan would never suspect. The gift was the birthday present she personally gave to Xiao Xuan Yi, causing her to lose her child.

During this time, Tang Wanwan has been taking care of Taifei and claiming that she has no mother, that Taifei is her mother. She believes that the truth will eventually come to light. Xiao Xuan Yi's subordinate investigated the matter but found no leads. Xiao Xuan Yi believes that it must be the spies from Xiliang Province, as only they would clean up the evidence so thoroughly.

Boss Hua and the military advisor meet with Prince Han Ya, who turns out to be a prince from Xiliang Province. Boss Hua expresses his desire to cooperate with people like them and conspire together for a greater cause. Tang Wanwan sees the name that Xiao Xuan Yi gave to their child and realizes that Xiao Xuan Yi has also been reborn, so she goes to find him. Xiao Xuan Yi confirms that he was indeed reborn during the Lantern Festival but initially thought it was just a dream.