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Wendi (born 203, China—died 157 bc, China) was the posthumous name (shi) of the fourth emperor (reigned 180–157 bc) of the Han dynasty (206 bc–ad 220) of China. His reign was marked by good government and the peaceful consolidation of imperial power. A son of Liu Bang (the Gaozu emperor), the founder of the Han dynasty, Liu Heng was the prince of Dai when he was chosen emperor over several other contenders for the imperial...