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Title: Guandao  
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Subject: Chinese swords, Green Dragon Crescent Blade, Podao, Dao (sword), Glaive
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Traditional Chinese 關刀
Simplified Chinese 关刀
Literal meaning blade of Guan Yu
Yanyue dao
Chinese 偃月刀
Literal meaning reclining moon blade

A guandao is a type of Chinese pole weapon that is used in some forms of Chinese martial arts. In Chinese, it is properly called a yanyuedao (偃月刀; lit. "reclining moon blade"), the name under which it always appears in texts from the Song to Qing dynasties such as the Wujing Zongyao and Huangchao Liqi Tushi. It is comparable to a European fauchard or glaive and consists of a heavy blade with a spike at the back and sometimes also a notch at the spike's upper base that can catch an opponent's weapon. In addition there are often irregular serrations that lead the back edge of the blade to the spike. The blade is mounted atop a 1.5 m to 1.8 m (5–6 foot) long wooden or metal pole with a pointed metal counter weight used to balance the heavy blade and for striking on the opposite end.

On modern versions, a red sash or tassel is attached at the joint of the pole and blade. Variations include having rings along the length of the straight back edge as found in the nine-ring guandao, having the tip curl into a rounded spiral as in the elephant guandao (literally elephant Knife), or featuring a more ornate design as exemplified by the dragon head guandao. However, apart from the "elephant knife" none of these variations seem to have historical ground.


According to legend, the guandao was invented by the famous general Guan Yu during the early 3rd century AD, hence the name. It is said that he specified its form and size to be made by a smithy, and was uniquely able to wield such an imposing weapon due to his large stature and legendary strength. Guan Yu's guandao was called "Green Dragon Crescent Blade" (青龍偃月刀, Qīnglóng yǎnyuèdāo) which weighed 82 Chinese jin (estimated either at 18.263 kg or 48.38 kg—a Han Dynasty jin was 222.72 grams in the metric system, while the jin used in the Ming Dynasty—during which the Romance of the Three Kingdoms was written—was about 590 grams).

However, while the famous novel pudao or dadao were all wielded with two hands and so would not have been made or used in a pair.

If Guan Yu did use a pole arm, it is most likely that he used a halberd ( 戟), which was one of the most common horsemen's pole arms during the era, and also because historical citations mention Guan Yu attacking his opponents both with thrusting and hacking attacks.

While some historians still contend that the guandao was simply an uncommon, rare weapon prior to the Tang dynasty and was thus not illustrated before then, historical evidence does lean towards the attribution being an instance of creative license—historically, the guandao, for the most part, was not actually intended for field use, but was instead used as a tool to test the strength of those who wished to become military officers: weapons of various weights were made, the test composed simply of performing various required maneuvers using such weapons. During the Qing dynasty some extraordinarily heavy versions of guandao were made for this purpose: a candidate had to be able to wield a weapon weighing 80, 100, or 120 jin (48, 60 or 72 kg, using the modern value for 1 jin = approximately .6 kg), with weapons of each weight being successively higher grades in the exam, the passage of which led to appointment as military officers of various ranks based on the grade. The heaviest known "testing guandao", which resides in a museum at Shanhaiguan (山海關), the site of one of the gates on the Great Wall and a Ming Dynasty outpost that marked the division between territories controlled by Han Chinese and Manchu forces, weighs 83 kilograms. While the examples are taken from the Qing Dynasty and therefore may have been influenced by the book (which was written in the Ming Dynasty), military officer tests (which began in the Tang Dynasty) have always involved lifting heavy stones of standardized weight and maneuvering them about, possibly contributing to the writer's decision to assign an unusual weight to Guan Yu's weapon.

The weapon was also widely adopted by martial artists for the purposes of training and for demonstrating their strength, perhaps also to train specifically for the military officer's tests. It is likely that such practices influenced the attribution of the weapon to Guan Yu despite the lack of historical evidence for his use of it—the use of a weapon that was intentionally made too heavy to be of practical use would make the character more imposing in literature.

Where it was used, it was largely used by infantry. In the Qing Dynasty, it was used by the all Han Green Standard Army. Apart from that, the lack of standardization of the antique examples that survive to today seems to indicate that at least from the 19th century onwards it was popular in the civilian martial arts realm as well.

The modern guandao as adopted by martial artists today usually weighs between 2 kg and 10 kg (5 and 20 pounds), and is typically composed of a wood shaft of about three to five feet in length, a short blade of about 12 to 18 inches on one end, and a mace head on the other (which serves mostly as a counterweight to the blade but can also be used for striking), the whole assembly rarely exceeding five to six feet in total length. The greatly reduced weight and length reflects its nature as a more practical form for martial artists.

Combat uses

The guandao is used quite frequently in the part of contemporary Wushu derived from the Shaolin or Wudangquan form of martial arts in modern times. According to contemporary Wushu practice, its purpose is more to disarm an opponent and deflect his strikes rather than to attack. To that end, a large veil cloth is attached to the end to dissuade and confuse opponents. However, there is no evidence of this being an authentic depiction of the weapon's historical usage. Tassels and cloths are attached to numerous weapons such as jian, dao, meteor hammer, and guandao used in Chinese opera, one of the sources of movements found in contemporary wushu.

Forms utilizing the weapon in nearly all traditional styles of Chinese martial arts, emphasize strong slashing movements and momentum to keep the

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