Tian Chengsi

After the Anshi Rebellion, why didn't the Tang Dynasty cut down the domain? Why is the division of the clan more and more serious?
Anshi Rebellion Tang dynasty Phan Town The town of Domain was divided Tian Chengsi
01-19
In the middle and late Tang Dynasty, the three towns in Hebei were powerful, so why could they not overthrow Li Tang and establish a new dynasty?
Li Tang Three towns of Heshuo New Dynasty Anshi Rebellion Tian Chengsi
01-12