Jiao Yu

An illustration of a fragmentation bomb from the Huolongjing. The black dots represent iron pellets.

Essentially a fire lance on a frame, the 'multiple bullets magazine eruptor' shoots lead shots, which are loaded in a magazine and fed into the barrel when turned around on its axis.

Jiao Yu was a Chinese military general, philosopher, and writer of the Yuan dynasty and Ming dynasty. He was entrusted by the Zhu Yuanzhang (the future Hongwu Emperor) as a leading artillery officer for the rebel army that eventually overthrew the 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. After this, Zhu's army captured the whole of Shandong in one campaign, strengthening his base while the authority of the Mongol regime at Beijing was collapsing all around. Jiao was eventually appointed as the head officer of the enormous Shen Zhi Ying Armory, where multitudes of manufactured guns and artillery were deposited for storage and safekeeping. alongside the monumental disaster of the enormous Weiyang arsenal accidentally catching fire in 1280 AD and killing more than 100 people. With Zhu Yuanzhang in power over the government, he established various production facilities in the capital at Nanjing for the manufacture of gunpowder and fire-weapons, stored in various arsenals throughout the country.

Along with the scholar, general, and court adviser Liu Bowen (1311–1375), Jiao Yu became an editor of the 14th century military treatise known as the Huolongjing (Fire Drake Manual). The Nanyang publication of the book, known as the Huolongjing Quanzhi (Fire Drake Manual in One Complete Volume) featured a preface written by Jiao Yu much later in 1412 AD. Both publications falsely attributed the earliest passages of the book to the ancient Chinese Prime Minister Zhuge Liang (181–234 AD) of the Shu Han, The oldest passages found in the Huolongjing were collected from sources no earlier than circa 1270 AD.

Although Jiao Yu's biography does not appear in the History of Ming (1739), Yu was mentioned in Zhao Shizhen's Shenqipu (1598 AD), He Rubin's Binglu (1606 AD), and Jiao Xu's Zekelu (1643 AD). Descriptions of the Chinese hollow cast iron grenade bomb Descriptions of the Chinese fire arrow. Descriptions of explosive land mines. Descriptions of explosive naval mines. Descriptions of fire lances and proto-guns. Descriptions of bombards and cannons. Descriptions of hollow, gunpowder-packed exploding cannonballs Descriptions of handguns with possible serpentines used as components in matchlocks. Description of rocket launchers and two-stage rockets. Descriptions of winged rockets with fins attached for better aerodynamic stability