Tang Destruction of Xiao Xian's Liang State

Timeline

1. 618–621Jiangling · HubeiXiao Xian made Jiangling his capital and declared himself emperor under the state name Liang, controlling the middle Yangtze and the Jingxiang region with a strong navy, becoming the Tang's foremost southern opponent in its wars of unification.
2. 621Middle Yangtze · HubeiLi Xiaogong served as commander-in-chief and Li Jing as marching army secretary; leading the Tang fleet from Kuizhou down the Yangtze, they took Xiakou, Jingmen and other places in succession, Liang's troops collapsing at the first sign of them and the Yangtze defense line quickly breaking.
3. 621Jiangling · HubeiTang forces reached the walls of Jiangling, where Xiao Xian surrendered and was later executed. Liang fell, the Jingxiang region entered the Tang domain, and the middle Yangtze waterway came under Tang control.