sources: https://hksevens.com/about-us/past-champions
https://www.facebook.com/page/169502759794324/search?q=1976
https://www.scmp.com/sport/rugby/sevens/article/1723029/pictures-40-years-hong-kong-sevens-part-1-1976-1980
https://www.scmp.com/sport/rugby/sevens/article/1723073/pictures-40-years-hong-kong-sevens-part-2-1981-1985
http://rugby.hkcitylife.com/40-years-of-hong-kong-sevens-milestones/
