Look at feng shui, because there are too many theories and factions, what is the standard?

People often say that "if you are not afraid of a thousand tricks, you are afraid of one trick". You don't care much, but you care about the essence. China has a long history of geomantic omen, extensive knowledge and numerous sects. Which school has high accuracy, endless debate and no consensus. As a Feng Shui lover, no matter which school of Feng Shui you study, it depends on its accuracy in practical application. Since they can survive and develop for thousands of years, there must be a reason for their survival. Therefore, only by thoroughly understanding its essence and then skillfully applying its true meaning to reality, the benefit is truth, which is better than eloquence.