The communist

uprising forced Yip Man to flee Fatshan for Macau, leaving his fortune behind, as did many of his contemporaries. Leung Shan, a master of Pak Mei (White Eyebrow) Kung Fu found Yip Man living there in impoverished circumstances, and took him to Hong Kong.
Leung Shan ran a Kung Fu school on the premises of the restaurant workers' union in Hong Kong. Yip Man was put up in a small apartment there, and would occasionally watch the classes, occasionally criticising the techniques taught by Leung Shan, without intending offence.
One night in 1951, Leung became annoyed by Yip Man's criticism, and challenged him. Though Yip Man was older and less powerful than Leung Shan, the latter could not match the techniques of Wing Chun and was easily overcome.
Yip Man then revealed himself as the grandmaster of Wing Chun, and took Leung Shan as the first of a small number of disciples, who included the late Bruce Lee and the current Traditional Wing Chun grandmaster, William Cheung Cheuk Hing.