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 through their operations in opium, prostitution and gambling until they lost power after Kenshirō Kasumi left China in 1932. At one point Zhāng Tài-Yán claims that these three sources of revenue are over 200 billion yuan ($32.5 billion in 2013) a year. The Qīng Bāng are hunted down by the rival organization Honghua Hui and it is estimated that their death toll is over 10,000. The organization eventually collapses after the nuclear war.