The Big Circle Boys (大圈幫) is one of the major Chinese Organized Crime syndicates. Its Chinese designation is Tai Huen Chai (大圈仔). It was featured in the Alex Rider novel [[Skeleton Key (novel)|Skeleton Key. It was created by corrupt members of the Red Guards (China) who fled to Hong Kong as refugees from Mao Zedong's Cultural Revolution. It is active on several continents including North America, where the group is said to have an influence in Canada. The Big Circle Gang is believed to be linked to the shooting of Hong Chao Huang in the upscale district of Shaughnessy in Vancouver, BC, Canada.