The che dian chong () is a breech-loading, cartridge-using musket invented by Zhao Shizhen (趙士禎) during the Ming dynasty for the dynasty's arsenals.Zhao Shi-zhen(趙士禎).Shén qì pu (神器譜). 1598. Like all early breech loading fireams, gas leakage was a limitation and danger present in the weapon's mechanism.
The zi mu chong is also a breech loading musket, the earliest breech-loader musket known. It was indigenously developed in China in the late 16th century.
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