Communities / Organisations
A secret organisation, in which the members are bound to certain rules by a blood oath. The formation of these organisations were based on relations (such as blood relations, village/geographical relations, or same profession), and build camaraderie as an organisation in secrecy. These organisations were usually involved in criminal activities such as extortion, drug trafficking, prostitution and illegal gambling dens.
黑帮, 黑社会（Hong Kong, Taiwan）
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bēi bāo kè