Qing Bang
Qīng Bāng (青幇 Chinpan) is based on the historical Shanghai-based "Green Gang". In Souten no Ken they used to control Shanghai's underworld with the trafficking of opium until they lost power after Kenshirō Kasumi left China in 1932. They are hunted down by the rival organization Honghua Hui and it is estimated that their death toll is over 10,000.