True Gua (due east), Kun Gua (southeast), Li Gua (due south), Kun Gua (southwest), Dui Gua (due west), Gan Gua (northwest), Kan Gua (due north) and Gen Gua (northeast).
Second, the seven-star orientation corresponds to the modern orientation:
One white (due north), two black (southwest), three blue (due east), four green (southeast), Huang Wu (middle palace), six white (northwest),
Seven feet (due west), eight hundred (northeast) and nine purple (due south).
Third, the geomantic orientation of Bazhai school is to sit on the mountain and lie in the prone position, and then spread out in all directions according to the song of the big patrol year. For example, the house in the southwest to the northeast is called Kungong. According to the Song formula, "Yan will suffered a disaster in May and June", we know that the modern orientation is: Kungong in the southwest is a recumbent position, facing the palace due to the west is a heavenly doctor, the dry palace in the northwest is a life-prolonging one, the dry palace due to the north is desperate, the Geng Palace in the northeast is angry, and the East Palace is a disaster. And so on. If the gate faces the northeast, there are three "ugly, gen and yin" mountains among the 24 mountains in actual geography. It is worth noting that it is a "ghost gate line" within the range of 15 degrees and is not suitable for opening doors.
So choose ugly and yin to open the northeast gate.