Wang Zhengyi

Wang Zhengyi (, courtesy name: Zibin / 子斌, Xiao'erjing: ) (1844–1900) was a martial artist during the late Qing dynasty, hailing from Cangzhou, Hebei. He was of Hui Muslim ethnicity. Being the fifth by seniority of his master's students, Wang came to be called Wang Wu (; i.e. Wang the fifth). His use of the dadao (Chinese greatsword) would lead to him earning the sobriquet by which he is best known, Dadao Wang Wu (; sometimes rendered in English as Broadsword Wang Wu or Great Sword Wang Wu).

Liang Qichao also called him the Hero of Yānzhào from the traditional name for Hebei.