Which episode of "The Warrior Lan Ling Tian Nv" became a princess?

Plot: Wu Xue is about to get married and become a princess. She can't adapt to many manners and is depressed. In order to make Wu Xue happy, Gao Changgong and Wu Xue pretended to be civilians and sold their eggs in the street. Although hard, they are happy. Simple happiness makes Wu Xue walk out of the uneasy haze and happily go back to prepare for the wedding with Gao Changgong.

At the same time, Zheng Er, who was exiled as a slave, missed the warrior Lan Ling in every way, hoping to escape and see him again. In order to escape, Zheng Er risked his life to catch the plague, and finally escaped from the slave prison after a narrow escape.

On the day before Gao Changgong and Wu Xue were about to get married, everyone happily arranged a happy event for them. At this time, someone reported that someone fainted at the entrance of the building. Gao Changgong pushed open the heavy Zhumen and was surprised to see Zheng Er, who was covered in mud, faint in the torrential rain.

After Zheng Er woke up, he was remorseful, begged Xuewu to forgive Gao Changgong, and finally stayed in Warrior Lanling Mi. But Zheng Er's heart has already decided that she wants to win back the heart of the warrior Lanling.

With everyone's blessing, Wu Xue and Gao Changgong got married. Along the way, they experienced so many ups and downs that Wu Xue was moved to tears.