Who became emperor after Wu Zetian? What is their relationship?

This is Li Xian, mother-child relationship.

In the first month of the first year of Shenlong (705), Wu Zetian was seriously ill and bedridden. In Yingxian Palace, only Zhang Yizhi and Zhang Changzong were attendants. Prime Ministers Zhang Jian, Cui Xuanyong and Shangshu Jinghui, Huan, Yuan, etc. He made friends with the imperial army, commanded Li Duozuo, and pretended to be two rebels.

So he launched a coup, led more than 500 imperial soldiers, rushed into the palace, killed two, immediately surrounded the fairy hall where Wu Zetian slept, and asked her to abdicate. Wu Zetian was forced to abdicate with Prince Li Xian (the third son of Wu Zetian), and then moved to Shangyang Palace (west of Wei Zi City in Luoyang, also known as "Xigong"). ?

After the restoration of Li Xian, Wu Zetian was honored as the "Emperor" and the Wu and Zhou Dynasties ended. When the Tang Dynasty was restored in February, officials, flags, costumes and figures were all restored to the old system, and God was also called the East Capital.

Extended data:

Li Xian said:

Tang Zhongzong Li Xian (656-7 10), formerly known as Li Zhe, was born in Chang 'an in 656. The fourth emperor of the Tang Dynasty, the seventh son of Tang Gaozong, Li Zhi and the third son of Wu Zetian. He was in power twice from 683 to 684 and from 705 to 7 10.

Li Xian was born in Chang 'an on May 5th, 6561/kloc-0. He was the first king of Zhou and later the king of England. After Prince Li Xian of Zhang Huai was abolished, Li Xian became the Crown Prince. In the first year of Hongdao (683), the emperor ascended the throne, and Wuhou was called the imperial court.

In the first year of Guangzhai (684), he was abolished as the King of Luling and moved to Zhou Jun and Zhoufang successively. In the second year of victory (699), Luoyang was recalled and re-established as the Crown Prince. The first year of Shenlong (705) was reset.

During Li Xian's reign, he restored the old system of the Tang Dynasty, exempted taxes, set up ten supervisors, set up a bachelor's degree in a literary museum, developed economic and cultural exchanges with Tubo, and implemented a people-friendly policy, marrying Princess Jincheng to Kridê Zukzain, the three treasures of Tubo, thus ensuring the stability of the frontier.

Tang Zhongzong Li Xian was in power for five and a half years. Jinglong was poisoned at noon in June for four years (7 10), aged 55, and was buried in Dingling.

Baidu Encyclopedia-Wu Zetian