Du Shi dating history

Du Shi is a member of the following lists: Chinese inventors, Han dynasty government officials and Hydraulic engineers.

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Du Shi (Chinese: 杜詩; pinyin: Dù Shī; Wade–Giles: Tu Shih, d. 38) was a Chinese hydrologist, inventor, mechanical engineer, metallurgist, and politician of the Eastern Han dynasty. Du Shi is credited with being the first to apply hydraulic power (i.e. a waterwheel) to operate bellows (air-blowing device) in metallurgy. His invention was used to operate piston-bellows of the blast furnace and then cupola furnace in order to forge cast iron, which had been known in China since the 6th century BC. He worked as a censorial officer and administrator of several places during the reign of Emperor Guangwu of Han. He also led a brief military campaign in which he eliminated a small bandit army under Yang Yi (d. 26).