Tu Huo Qiang (Chinese: 突火枪; Pinyin: tūhuǒqiāng) was a precursor to guns invented in the 1250s.
It consisted of a moso bamboo tube which had been partially hollowed out and loaded with gunpowder and a single projectile, called the zi kē (子窠).
[citation needed] Chinese historian Fiang Jiasheng [zh] in the 1950s first posited it as evidence of the first "occlusive bullet", whereby a "pellet wad" occluded the barrel.
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