Answer:
Rebellions broke out and the economy of the empire struggled.
Step-by-step explanation:
Wu Zeitan or Wu Zhao as we know him, was a Chinese official from the Tang Dinasty that ruled "unoficially" the empire from 690-705 when he died, in this period of Chinese history there was an emperor and a supreme general of the forces, who was the one that actually ruled the country and kept everything undercontrol, once Wu Zhao died since there was no one to keep in control and guarantee security for the emperor pleasants started to rebel agaisnt the empire and since an insecure environment does not make for a great economy to flourish, the empire struggled economically.