A guandao, kwan dao, or kuan tao is a type of Chinese pole weapon that is used in some forms of Chinese martial arts.
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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 a whopping 83 kilograms.