2 "Point" and "Tang Ming"
"Cave" is the gathering point of "Qi" and "Dragon", and "Tang Ming" is the place where we choose to live, live and work. "Ancient geographers named it" Tang Ming "after the place name in front of the cave.
3 sand
"The sand is in front of and behind the cave and around the mountain." "Sand" is one of the important factors that constitute the cave environment.
4 water
"Water, the blood of the dragon. The gas outside the cave, the dragon is not sent by water and cannot be solved; The point is not the water boundary, and there is no way to stop it. " According to geomantic omen, qi also goes with water, and where there is water, there must be qi.
5-way
Direction refers to orientation, and orientation is a vector.