Sui

[] 1. Sui Dynasty had provoked four wars with Korea and lost each time which caused China to be viewed as weak and attacked by the Turks. 2. The Sui Dynasty only lasted 38 years and only had three emperors. 3. The second emperor Yangdi caused the Dynasty to decline. 4. Emperor Yang brought war and caused famine. 5. Later, the peasents went into large groups and rebelled.