What about the boundary between the south and southwest of the cemetery?

All right.

It is better for the cemetery to face southwest, not southeast. Because if the cemetery faces the southeast, from the perspective of yin and yang, the sunlight collected in the direction it faces is very small, and its descendants cannot benefit from this cemetery. When choosing the location of a cemetery, its geomantic orientation is extremely important. Different types of cemeteries have different arrangements for the pattern. There are some uses, even higher requirements for soil, geological environment and coordination with surrounding scenery.