What is a dragon seeker?

People who have used the dragon ruler will find that the detection of known objects is very accurate, and the detection of unknown objects is extremely inaccurate. Therefore, using the dragon ruler to find the dragon cave is purely a scam, but it is just a gimmick of the merchants. The dragon ruler needs to be placed flat on the chest, and there is a very sensitive orientation between the vertical grip and the pointer parallel to the ground. As long as the user leans slightly in a certain direction, the pointer will point there, that is, the dragon ruler will point anywhere the user wants to point. Because the dragon ruler is flat, it is impossible for people to maintain an absolute level. The pointer moves when it is slightly tilted, which of course has a psychological effect. Even if the master of the operation didn't deliberately deceive people, then because he values a certain point here as an acupuncture point, when looking for the dragon ruler at the flat end, the psychological effect will make the dragon ruler slightly tilt there, and the pointer naturally points there. This psychological tendency may not even be realized by himself, so some people are convinced that the Dragon King really works, because he himself was cheated by the Dragon King. Under the above psychological conditions, the geomancer will think that the dragon ruler works. Because his favorite acupoints are measured with a dragon ruler every time, which is very accurate, but where does he know? It is precisely because he likes this land that he naturally leans there under the psychological effect. There is another situation, for example, a person holding a dragon ruler and testing a watch of his favorite and most annoying people is actually very accurate. The principle is naturally the same as above.