The core of traditional geomantic conception is axisymmetrical theory. That is to say, a straight line extends from a certain point, that is, sitting on a mountain, along this straight line, spreading left and right, spreading back and forth, forming a symmetrical figure, balancing left and right, and balancing back and forth, which is considered to be the most standardized Feng Shui scheme. In the natural state of the site, the terrain is complex, but the basic idea is to find the balance point of relative and symmetry and evaluate the concept of symmetry of the central axis. Such as: Zuo Qinglong, right white tiger; Vestibular case, leaning against the mountain; Tianxin uses ten things. All activities are based on the thinking concept of axis symmetry.