 He defeated Liu Shouguang (who had proclaimed a Yan Empire in 911) in 915, and declared himself emperor in 923; within a few months, he brought down the Later Liang regime.Thus began the Shatuo Later Tang — the first in a long line of conquest dynasties.After reuniting much of northern China, in 925 Cunxu conquered the Former Shu, a regime that had been set up in Sichuan.