Does the "Big Empty Death" in geomantic omen refer to individual residence or community?

The great void in the mysterious geomantic omen means that the sitting direction (orientation) of the house is just on the dividing line of eight hexagrams (that is, the orientation is 45 degrees in each direction), so the house owner is fierce.

If the new house is suggested not to buy a small void, the sitting direction (orientation) of the house is just on the three azimuth lines (15 degrees in each direction) subdivided by each hexagram, so the house is also fierce. It is necessary to pay attention to buying a house.