What is the purpose of the dragon ruler and how to use it?

The purpose of the dragon ruler is to use the magnetic field sensitivity of the human body to release subtle and exquisite induction through the physical reaction of the walking stick, and convert it into visible signals, which can be used to find veins, water sources, acupoints, geomantic omen, missing people, looking for lost things, divining good and bad luck and so on. When using the dragon ruler, put the side chest vertically below the right arm, so that the right arm can be stable. Hold the dragon ruler in hand, with the ruler needle boat slightly lower, point straight ahead or open your left palm to hold the bottom of the dragon ruler with your right arm, while the hand brace can stabilize the dragon ruler and hold it on your chest, with the ruler needle pointing straight ahead and the needle slightly lower. First of all, walk straight and flat, so that the dragon ruler can point forward steadily, so the body and footwork should be calm. Don't let the dragon ruler move with its needle. Point the needle of the dragon ruler in any direction, use your mind to make the needle neck motionless, and then turn the body to turn the dragon ruler, but the needle should be pointed in the original direction steadily and cannot rotate with the ruler, that is, when the body rotates left and right, the needle cannot rotate with the ruler. This kind of training can be extended to any object, such as TV, electric fan, desk and so on. You should aim the dragon ruler at the quasi-target with your mind and follow the target irregularly. No matter which direction you take, the needle should point to the locked target, relax and concentrate. Training for a week or two should be handy.