Is it low behind the grave to sit by the transverse ridge?

Sitting on the horizontal ridge, the back of the grave is not low, because in terms of pattern, it is actually high before and low after, which is a very unstable cemetery pattern. The most important thing in a cemetery is to hide the wind and gather gas, if the pattern seems to be high before and low after. The front is high and the back is low, which means sitting empty and facing full. There is no difference between sitting empty and full, because sitting on Hengling is only a mountain direction and cannot be explained.