Chinese sword

Historically, Chinese swords are classified into two types, the jian and the dao. A Jian is a straight, double-edged sword mainly used for stabbing; the term has been commonly translated into the English language as a longsword. Meanwhile, a dao is a single-edged sword (mostly curved from the Song dynasty forward) mainly used for cutting, and the term has been translated as a saber or a "knife". Bronze jians appeared during the Western Zhou period and switched to the more durable wrought iron and steel during the late Warring States period. In modern times, the ceremonial commissioned officer's sword of the Chinese navy has been patterned after the traditional jian since 2008. Besides specialty weapons like the butterfly dao, Chinese swords are usually 70–110 cm (28–43 in) in length. However, longer swords have been found on occasion. Outside of Ancient China, Chinese swords were also used in Ancient Japan from the 3rd to the 6th century AD, but they were succeeded by native Japanese swords by the middle Heian era.