Compass is a tool for feng shui detection. How to use it?

Compass is an important tool for geomantic operation, and its basic function is orientation. When we understand the knowledge of feng shui and regulating qi, we must first learn the basic method of compass orientation. Compass is called compass, which was created in the era of Xuanyuan Huangdi, and later passed down by the sages of past dynasties. It was revised and perfected by observing the ups and downs of mountains, rivers and plains on the earth according to the principles of Yijing and Heluo. It is used to determine the direction and survey the terrain. Most geologists and sailors call it "compass" or "Luo Geng", but seldom call it "compass".

Speaking of the use of the compass, I believe it will take up a lot of space if we discuss it in detail. Because it contains too many things, this article only talks about simple usage. There are many kinds of compasses, such as ternary disk, three-in-one disk, ternary three-in-one dual-purpose disk, easy disk, mysterious disk, and unique disks of users in various schools. However, no matter what kind of compass it is, there must be a layer in the middle that is in the direction of the twenty-four mountains. From the north, they are Renzigui, Ugly Genyin, Jiamaoyi, Chen Xunsi, Bingwuding, Shen, Geng Youxin and Xu Ganhai. There are 24 directions.

As can be seen from the shape of the compass, the center of the compass is a circular Tianchi (that is, the compass used for orientation). Outside is a movable turntable with a copper surface and gold lettering on a black background, which is called an inner disk or dish. The circle on the disk is full of words, and it is customary to call a circle a layer. The first layer has 24 directions, and the outermost layer is a square disk, which is called an outer disk or a square disk. The tray body is made of rosewood, which is the most durable, but its weight is heavier than that of ordinary wooden trays. There are four holes in the outer disk, and two fishing lines or glue lines respectively pass through the holes in the middle of the four sides to determine the sitting posture.

The compass is mainly used for the magnetic needle in the center. The inner plate outside Tianchi Lake is made of steel. The background color of Tianchi Lake is generally white, and there is a red straight line at the bottom. There are two red dots on the left and right of the red line at one end. The red line is located on the north and south sides. One side with a red dot is Zifang (due north) and the other side is noon (due south). There is a very sensitive magnetic needle on it, and one end of the magnetic needle has a small hole. When using the compass, hold the outer disk with both hands left and right, and separate your feet slightly. Put the compass between the chest and abdomen, keep it horizontal, not high left and low right, and not high front and low back. Then lie on your back, face to face, and start to stand up straight. At this time, the cross silk thread on the compass should coincide with the front, back, left and right positions of the house. If the crosshair direction is incorrect, the measured sitting posture will deviate.