How to build the trapezoid of homestead conforms to Feng Shui theory?

Ancient city walls also pay attention to geomantic omen, but there are not many square walls, which depend on natural conditions. However, the position, orientation and central axis of the city gate (that is, the orientation of the city) are all highly valued. You can totally adopt this principle. Of course, we should not blindly accommodate one side of the trapezoid, but strictly abide by the principle of Feng Shui. These principles may be reflected everywhere in local traditional customs, which are worthy of attention and reference.