The courtyard does not face south or north, and the south does not live by the mountain, which means: when building a courtyard, avoid letting the house face south and the door face north. At the same time, don't rely on the mountain to the south of the yard, because the mountain will block the sun, which will lead to poor lighting of the house.
When choosing a homestead, we must avoid the house facing south, because it will lead to poor lighting, and at the same time avoid the south facing the mountain, because it will block the sun and lead to poor lighting. This statement is very common in traditional geomantic omen, but it has no scientific basis.