http://yw7nc56v4nsudvwewhmhhwltxpncedfuc43qbubj4nmwhdhwtiu4o6yd.onion/t/second-realm-book-on-strategy/164
One could define the mafia as an organized crime business association based on a shared ethical background. Similarly the Triads are built on ethnicity (Han Chinese) and sharing a cultural narrative (resistance to the Manchu rule). They have been around for centuries, mostly by establishing an integrated society and trying to limit their activities to inter-triad conflict, exploiting street criminals, and focusing on less-public crime.