Zhang Cang

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Zhang Cang 張蒼 (253–152 BC) was a Chinese military general, philosopher, and politician during the Western Han dynasty. He was the representative thinker of the Yin-Yang School, as well as a Confucian scholar, army general and prime-minister under Liu Bang (Han Gaozu, the founder of the Han dynasty). Evidence on his life is contained in the Book of Han and some other sources.