Wubei Zhi
The Wubei Zhi (Chinese: 武備志; Treatise on Armament Technology or Records of Armaments and Military Provisions) is a military book in Chinese history. It was compiled in 1621 by Mao Yuanyi (茅元儀 Máo Yuányí; 1594–1640? ), an officer of waterborne troops in the Ming dynasty.