Transition from Sui to Tang: Wang Shichong's army defeated Li Mi's forces at the Battle of Yanshi, allowing Wang to consolidate power and soon depose China's Sui dynasty.

The transition from Sui to Tang (613–628), or simply the Sui-Tang transition, was the period of Chinese history between the end of the Sui dynasty and the start of the Tang dynasty. The Sui dynasty's territories were carved into a handful of short-lived states by its officials, generals, and agrarian rebel leaders. A process of elimination and annexation followed that ultimately culminated in the consolidation of the Tang dynasty by the former Sui general Li Yuan. Near the end of the Sui, Li Yuan installed the puppet child emperor Yang You. Li later executed Yang and proclaimed himself Emperor Gaozu of the new Tang dynasty.