How much is a dragon ruler? Search online, there are more than 100, and there are thousands. Is cheap really ineffective?

The basic principle of the dragon ruler is the same as that of the crystal pendulum. It is a very sensitive tool, which can be influenced by people's ideas and gas fields, as well as the energy fields of the outside world and different things. In this kind of internal and external interaction, users should first be familiar with its characteristics and changes, and then they can feel its abnormality. It takes some time to study and practice if they want to use very good spirituality. Individuals can find veins, water sources, acupoints, feng shui measurement, missing people, looking for lost things, divination, good or bad luck and so on. It is a very practical and easy-to-use product. What kind of genius do you buy with thousands of dollars? Hundreds of dollars are imitations. The electronic model of Nanning Niu Dun is 1880. Many people buy this. I hear it's smart.