In the first change of geomantic omen in later generations, it began to gradually change into a part, until it began to despise mountains and reuse compasses on a large scale. As we all know, the compass is used to measure the orientation, so the principle of "regulating qi" can never be separated from the principle of "taking orientation as the center" no matter what genre it is used; At this time, a new faction "rational style" which is "guided by a certain theory and based on a certain theory" was born and became the mainstream. Of course, rational style is the general name of all schools that need to apply orientation theory. This step is of great significance in the reform and development of geomantic omen, because it means that geomantic omen is divided into two schools in terms of methodology, namely, "building mountains and regulating qi"
But the consequences of this innovation are not satisfactory. On the surface, it seems that Feng Shui can be truly perfected, but on the contrary, Feng Shui theories based on "Li" emerge one after another, and Feng Shui circles begin to have various schools, so it is difficult to distinguish between true and false. This is a bottleneck in the later development of the theory of regulating qi, which greatly hinders the study of Feng Shui in later generations.
As we all know, people often say that theory should be integrated with practice, but without practice, there is only "theoretical principle", and many theories of regulating qi are only "based on their principles", and they can only stay in the "idealistic" position of guessing out of thin air and cannot quickly "go from theory to academic". When it comes to the art of regulating qi and geomantic omen, various schools in later generations call themselves "orthodoxy" and call any other school "pseudo-art", which makes the theory of regulating qi and geomantic omen have their own different emphases: some emphasize divination, some emphasize the five elements, some emphasize Yuanyun, and some emphasize the coordination of numerology and orientation. However, mainstream rationalism schools, such as Sanhe, Kong Xuan and Bazhai, etc. , are based on "reason is greater than action", and in view of this special situation caused by the development of geomantic omen, it is impossible for future generations to experiment one by one quickly and get a definite "true knowledge". In addition, because Dali's style is more suitable for modern urban geomantic omen and commercial operation, the overall mainstream of geomantic omen, which is well known to the world, has also begun to change, which can be described as many retrogressive changes. For example, the geomantic circle has changed from "a hundred schools of thought contend, seeking common ground while reserving differences" to "attacking each other and being incompatible with water and fire". However, in the era when it is difficult to distinguish between truth and falsehood, various styles of Qi-regulating Feng Shui all put forward that "one's own side is authentic and mainstream", which began to develop into the biggest problem encountered by later Feng Shui academic researchers.
In this context, the truth of regulating qi and geomantic omen is generally "excessive" and "unreasonable", so if later scholars want to study the truly practical geomantic omen, they can only find the root of geomantic omen, and then "seek dragons to protect their ancestors" in geomantic omen, and they can only "start all over again" if they really want to study geomantic omen. Nevertheless, in view of the current status of the agent Feng Qishui, of course, he can't give up completely, because Feng Qishui is "reasonable" after all, but it doesn't mean that "this principle must be wrong". Therefore, scholars who don't want to completely abandon the unconfirmed Feng Qi's geomantic omen and think that "mountains and rivers are the only way" can only inherit and carry forward the ancient "mountains and rivers geomantic omen" and formulate new rules to maintain the order of geomantic omen. In Yang Yide's words, this law is the principle that "the ancient law should be followed, and the later law should be the minister", which is actually the proposition that "the mountain is the body and the gas is used".