 The "Yi-chyun Hai Shee", or Black Serpent Society (which should more properly be "Hei She Shehui"), was the Chinese part of TRIO.It was one of many tongs formed in the 17th century to combat the tyranny of China's Manchu overlords.Under the command of its leader, Wang Tse-Tu, the Black Serpent Society was one of the few tongs to go international, establishing branches in the United States and Western Europe.