Mr. Sun Kim-long began his apprenticeship under the Cantonese opera master Wu Gongxia during the 60s; he also studied martial arts from Xu Junhan. He became popular in the eighties in the Singapore and Malaysian region.

Beside having extensive stage experience, Sun recorded numerous albums with his impressive singing voice in recent years. He also actively involves in Cantonese opera promotion and productions, which includes “Seven Filial Kins”, “Assault on the Red Light”, “Kublai Khan”, “Madame Butterfly”, “Jade Hairpin”, “The wife and The Concubine”, and “Eighteen Arhats Taming the Golden Condor”. He formed Xin Feng Huang Cantonese opera troupe with Nam Fung, and Xin Hui Huang Cantonese Opera Troupe in 2001 and 2002 respectively and in 2001, he wrote his first work of Cantonese opera, "Reflection of Beauties in Lotus Pond". He produced a new work, "Madame Butterfly" in 2003 and wrote "The Green Jade Hairpin"  in 2004. He wrote many scripts and his recent works include “The Heroes of Tang” and “Pearl Flag”.

Sun is currently vice chairman of The Chinese Artists Association of Hong Kong, board members of the Cantonese Opera Development Fund Advisory Committee, and the Cantonese Opera Advisory Committee. Sun had also won the Commendation award from the Home Affairs Bureau of the Hong Kong, SAR, in 2009.