 In 1905 he became the president of the Hong Kong Chinese Revolutionary Alliance.Upon the recommendation of Siu-bak Chan, Po-yin Chan joined in Hong Kong the Chinese Revolutionary Alliance in 1905 and went to Singapore in 1906 to help Mr. Cho-Nam Chan (陳楚楠, 1884-1971) and Mr. Wing-Fook Cheung (張永福, 1872-?