Furthermore, we should learn the theory of axial symmetry and various geometric figures. Axisymmetry is the core of traditional geomantic assessment of topography and characteristics. Round, oblate, square, rectangle, trapezoid with big inside and small outside are recognized as the best figures in geomantic omen. For example, a circle is a 360-degree symmetrical figure in all directions. Standing on the outer edge of a circular building, such as a city wall, the visibility of the circle is the greatest; With the same material, the circular object bears the greatest external pressure, the same length and side length, and the largest internal area, that is to say, the circle is the most inclusive. Judging from the disaster test, the circle is 360-degree all-round symmetry, which reflects the all-round induction disaster test. Followed by square, square and quadrilateral symmetry, reflecting one party's response to disasters and quadrilateral induction. Like the symmetry of households in Huaxi village, even if ghosts and gods do disasters, they can't find specific objects to add to the disasters. The reality is that the punishment of things rather than people is just a rule of the game. Under the guidance of neat, regular and symmetrical architecture, the ideological genes of collectivity, strength, endeavor and scale are cultivated. Under the guidance of disorderly buildings, selfish and narrow thought genes are cultivated. These may be feng shui effects. Artificial feng shui model.