七国之乱
Emperor Jing of Han (188 BC – 9 March 141 BC), personal name Liu Qi (劉啟), was the sixth emperor of the Chinese Han dynasty from 157 to 141 BC. His reign saw the limiting of the power of the feudal kings/princes which resulted in the Rebellion of the Seven States in 154 BC. Emperor Jing managed to crush the revolt and princes were thereafter denied rights to appoint ministers for their fiefs. This move helped to consolidate central power which paved the way for the long reign of his son Emperor Wu of Han.