In 1919, when the Chin Woo Athletic Association opened a branch in Guangzhou, Wong was invited to perform at the opening ceremony.[1] In the same year, Wong Hon-sam, one of Wong's sons, who was working as a bodyguard in Wuzhou City, Guangxi Province, was murdered by a rival known as "Devil Eye" Leung (鬼眼梁), who was apparently jealous that Wong Hon-sam was better than him in martial arts. Wong was so affected by this incident that he stopped teaching his other sons martial arts.[5]