What's the difference between Bijiashan case and Gaby case?

Shanhe said that the case was divided. Left and right, one inch high is a mountain, and one inch low is water. Geomantic terminology refers to backing mountains, that is, backing mountains; The left and right sides are sand, that is, dragon and tiger sand; The former is so, but the case is far away. These are the contents of Feng Shui preschool classes. Bijia Mountain may be in front, behind or around; But the pen case can only be in the front. Different positions and orientations of Bijia Mountain have different influences and are more complicated. Pen case generally represents a scholar. With the specific differences between Bijia Mountain and Bijia Mountain, there are many other differences, which are difficult to describe in one word here.