Wu Huifei conspired with Yang Hui to falsely accuse Li Ying, Li Yao and Li Cong, three brothers of Emperor Xuanzong of the Tang Dynasty, and Xue Xiu, the eldest brother of the Crown Princess, of conspiring to usurp the throne. When Emperor Xuanzong heard about it, he discussed it with the Prime Minister. By this time, the Prime Minister had become Li, and this Li was biased towards Li Mao, so he said to him, this is your majesty's family affair, and I can't suggest it. Tang Xuanzong abolished Li Ying, Li Yao and Li Cong as Shu Ren, exiled Xue Xiu, and soon killed these three sons.
Extended data:
In the early days of the reign of Emperor Xuanzong of Tang Dynasty, he made great achievements in politics. He was diligent in political affairs and took various measures to consolidate and develop the Tang regime. Emperor Xuanzong of the Tang Dynasty paid attention to bringing order out of chaos, appointed sages such as Yao Chong and Song Jing, and made great efforts to govern the country, thus creating a prosperous era of the Tang Dynasty-Kaiyuan.
However, in the later period of his rule, he gradually ignored state affairs and supported treacherous court officials Li and Yang. Yang Guifei, who was a great lover, combined with policy mistakes, tried to stabilize the frontier of the Tang Dynasty by reusing An Lushan and other ethnic groups beyond the Great Wall, which led to the eight-year Anshi Rebellion and laid the foundation for the decline of the Tang Dynasty.
Baidu Encyclopedia-Li Longji