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Jiao Yu

Jiao Yu () was a Chinese military general, philosopher, and writer of the Yuan dynasty and early Ming dynasty under Zhu Yuanzhang, who founded the dynasty and became known as the Hongwu Emperor. He was entrusted by Zhu as a leading artillery officer for the rebel army that overthrew the Mongol Yuan dynasty, and established the Ming dynasty.

As a senior adviser and general, he was later appointed to the venerable and noble status of the Count of Dongning. He edited and wrote a famous military treatise that outlined the use of Chinese military technology during the mid 14th century based on his military campaign of 1355 AD. However, descriptions of some gunpowder weapons in his treatise derive from Song dynasty (960–1279 AD) materials on battles against the Khitans (Liao dynasty), Jurchens (Jin dynasty), and Mongols. His ''Huolongjing'', translated as the ''Fire Drake Manual'', contains descriptions of fire arrows, fire lances, grenades, firearms, bombards, cannons, exploding cannonballs, land mines, naval mines, rockets, rocket launchers, two-stage rockets, and various gunpowder solutions including poisonous concoctions. Provided by Wikipedia