Developed during The Tang Dynasty (5th to 8th Centuries), The Changdao was similar to the European Sword Staff. Ranging from 4 to 7 feet long, it featured an extra long grip requiring two hands for use. The handles ranged from 6 to 12 inches and were made of wood. The blades were thinner than most Chinese combat blades of the Period. A stylized movement was needed to use The Changdao. Considered an overhead, slashing weapon, they were also used as thrusting devices. Many Imperial Guards used The Changdao Sword. The blade is documented as being highly effective – as is seen around 1560 on The Mongolian Border, when some 40,000 troops were armed with them.