Feng shui problem: the size of the courtyard gate was originally intended to be an auspicious number, but the mason made it a few centimeters smaller. How to resolve it?
The courtyard door focuses on the minimum size of light, and if possible, metal pipes are added on both sides to make rhombic strips, so that the size is between 3.07 and 3.12.
If it can't be changed, stone lions or bronze Kirin should be placed on both sides of the gate to block evil spirits. Lions and unicorns have a strong effect of eliminating evil spirits.