There is no concept of certain fortune on a certain direction in the feng shui of ancient China, so it is an original Japanese concept to abhor Kimon (the direction of northeast, called an ogre gate) and Urakimon (the direction of southwest which is the opposite side of Kimon).
また古代中国の風水では特定の方位について固定した吉凶をとる考えはなく、鬼門・裏鬼門を忌むのは日本独自の考え方である。