Led by
刘濞, King of Wu, the kings rose against the minister
晁错's plan to shrink their fiefs, under the slogan
诛晁错,
清君侧 'execute Chao Cuo and clear the ruler's side'. Emperor Jing had Chao Cuo executed, but the revolt went on until the general
周亚夫 crushed it. Afterwards the vassal kingdoms lost most of their power.