How can the compass tell which is the talent and which is the ding?

Compass, also known as compass, is a tool for feng shui detection and a commonly used operating tool for managing style. The compass is mainly composed of a magnetic needle in the center of the disc and a series of concentric circles, and each circle represents the ancient people's understanding of a certain level of information in the universe system in China.

With the development of processing industry, the magnetic needle changes from spoon to needle, and from floating magnetic needle to thimble, which makes the measurement accuracy of compass change qualitatively. In the Tang Dynasty, Yang Junsong combined the Eight Diagrams and the Twelve Branches into one, and added all the heavenly stems A, B, C, D, E, Ji, Geng, Xin, Ren and Gui to the earthwork system to indicate the positions except the two branches E and Ji. Thus, 360 degrees around the horizon is divided into twenty-four equal parts, called twenty-four mountains, each mountain accounts for fifteen degrees, three mountains are a divination, and each mountain accounts for forty-five degrees. Since the Tang Dynasty was founded, 24 mountains have been preserved. Therefore, the site of Twenty-four Mountains is one of the main grades of Pan Yang. There are three mountains in the north: Ren, Zi and Gui. The day after tomorrow belongs to Kangua and the day after tomorrow to Kungua. The three mountains in Northeast China are ugly, ugly and awkward. The day after tomorrow, they belong to divination and congenital divination.

The three mountains in the east, A, Mao and B, belong to the deviation between acquired divination and postnatal divination; The three mountains in the southeast are Chen, Xun and Si, and the day after tomorrow belongs to Xun Gua, and the congenital one belongs to Du Gua.

The three mountains of C, noon and Ding in the south are separated from the divination the day after tomorrow, which is the divination of the day after tomorrow; The three mountains in the southwest are not, Kun and Shen, and the day after tomorrow belongs to Kun Gua, and the congenital belongs to Kun Gua; West Three Mountains, Geng, You and Xin, belong to acquired divination, and divination is innate; The three mountains in the northwest, Ganhe Sea, belong to the divinatory symbols of the later days and the congenital divinatory symbols.