Before revision: The Chinese Wu Pei Chih ( 1621 ) later described Turkish muskets that used a rack-and-pinion mechanism, which was not known to have been used in any European or Chinese firearms at the time.
After revision: The Ming-era Chinese work the Wubei Zhi or "Treatise on Armament Technology or Records of Armaments and Military Provisions" of 1621 ) later described Turkish muskets that used a rack and pinion mechanism, which was not known to have been used in any European or Chinese firearms at the time.