Tang Zhongzong Li Xian is timid. When she was exiled to Fangling by Wu Zetian, she was afraid that one day her mother Wu Zetian would think that she was obstructing her rule and sent someone to kill herself. In those most difficult days, Wei Hou always accompanied Li Xian. Li Xian is very grateful to Wei Hou. He knew that Wei Hou, who had been married to him for less than a month, should have enjoyed splendor, but in the end he had to stay with himself in fear. In fact, Wei Hou can leave himself like everyone else, but Wei Hou doesn't, which makes Li Xian very moved. So, Li Xian swore to Wei Hou that he would live as he pleases when he returned to the palace, and would never restrict Wei Hou's behavior, which made Wei Hou start to be unscrupulous after he returned to the palace, and Li Xian also kept his promise and put on a green hat.
In addition to her cowardice, Shangguan Waner is also an important figure in the harem, because it was Wu Sansi who had an affair with her in the harem, and it was Shangguan Waner who introduced Wu Sansi to Wei and prompted them to have an affair. Li Xian was very fond of Shangguan Waner, so he indulged Shangguan Waner's behavior. Even because of Shangguan Waner's intercession, Li Xian delegated his power back to Wusan Division, which made his power in the palace weaker and weaker, even neglected.
It is also said that the affair between Wu Sansi and Wei Hou is actually a clue provided by Li Xian. According to "Tongzhijian", when playing backgammon, Wu Sansi invited him to play backgammon after his visit and gave them two chips. From then on, Wei Hou and Wu Sansi began to cheat in the harem, and Li Xian also chose to turn a blind eye.