1) Chinese secret society 
The Tiandihui (Tian-Di Association or Heaven and Earth Society) ({zh|t=天地會|p=Tiān Dì Huì}) or Hongmen 洪门, is a fraternal organization that originated in China. As the Tiandihui spread through different counties and provinces, it branched off into many groups and became known by many names, including the Sanhehui. The Hongmen grouping ...