abstract:Qi Men Dun Jia (simplified: 奇门遁甲; traditional: 奇門遁甲; pinyin: Qí Mén Dùn Jiǎ = wondrous door hides jia) is an ancient form of divination from China, which is still in use in China, Taiwan, Singapore and the Chinese diaspora in Southeast Asia. Qi Men Dun Jia may be applied to business, crime-solving, marriages and matchmaking, medical divination, Feng Shui, military affairs, finding missing people, travel, personal fortune divination etc.