The Second Reign under Empress Wei
Zhongzong rewarded the five leaders of the coup with high office, but real influence at court passed to his wife, Empress Wei, and to Wu Sansi, Wu Zetian's nephew, who became her close ally. Within months the empress persuaded the emperor that the coup leaders were dangerous. They were made princes, which removed them from the chancellery, and in 706 they were exiled. None survived.
In the same year Wang Tongjiao, husband of one of Zhongzong's daughters, was accused of plotting to kill Wu Sansi and depose the empress, and he and his alleged associates were executed.
The Question of the Heir
Empress Wei disliked Li Chongfu, Prince of Qiao, the emperor's eldest surviving son, and accused him of a part in the death of her own son Li Chongrun, who had been killed on Wu Zetian's orders in 701. Li Chongfu was sent away to serve as a provincial prefect under guard. Zhongzong is said to have offered to make his brother Li Dan heir, but Li Dan declined, and in 706 another son, Li Chongjun, born to a concubine, was made crown prince.
Li Chongjun was humiliated by Wu Sansi and by the emperor's daughter Li Guo'er, Princess Anle, who wanted to be named heir herself. In 707 he rose with a small force and killed Wu Sansi and his son, but the attack on the palace failed and he was killed as he fled.
Government by Favour
After 707 the empress and Princess Anle dominated the court, with the princess's sister Princess Changning, the empress's sister, and the emperor's consort Shangguan Wan'er, a gifted poet who drafted imperial edicts. Offices were openly sold. Appointments were made by "slant-sealed" edicts that bypassed the Secretariat and the Chancellery, the normal channels of government, and the number of officials swelled far beyond need.
The Frontiers
In 708 a dispute over the leadership of the Turgesh, a Turkic people in the Tianshan region, drew in the Tang. Suoge, who had succeeded his father, was challenged by his father's former subordinate Juechuo Zhongjie, who bribed officials at the Tang court to support a joint attack on him. Suoge struck first and killed the Tang official Feng Jiabin. The court then recognised Suoge's position and the fighting ended.
To the south-west, Zhongzong sought peace with the Tibetan empire. In 710 he sent Princess Jincheng, daughter of his nephew Li Shouli, Prince of Yong, to marry the Tibetan ruler Me Agtsom.