Tags: Weapon.
Changdao (simplified Chinese: 长刀; traditional Chinese: 長刀; pinyin: cháng dāo; literally long knife) was a type of anti-cavalry sword used in China during the Ming Dynasty. Sometimes called Miao dao (a similar but more recent weapon) the Japanese ōdachi very much resembles this blade. This weapon was adopted by General Qi Jiguang who acquired a Kage-ryū (Aizu) manual from Japanese wokou studied and modified it for his troops and used against enemies on the Mongol border circa 1560.