Is Yang Gong's geomantic omen the method of choosing a day in Heluo?

The origin of ancient geomantic omen in China is "Guo Yang once geomantic omen". China's earliest geomantic works are Eight Houses in Qin and Han Dynasties. The geomantic omen of Eight Houses was simply divided into Dongsi House and Xisi House, but it was condemned by the society at that time, and the theoretical deficiency was eliminated. Guo Pu's Book of Burial in the Eastern Jin Dynasty said that "the burrier hides and takes advantage of anger", which is the theme of Feng Shui in Yang Gong. The theory of book burial is relatively complete, and more importantly, it conforms to China's understanding of the Book of Changes in ancient times, and the theory of book burial is relatively unified. It has also been recognized by the society. Guo Pu's burial book is just a theory. Practice comes from Yang Gong. Tang Xizong, Yang Gongren, official doctor Jin Guanglu, is in charge of the geography of Lingtai. Yi Ming, the word Yun Song, and the number to save the poor. He is the author of books such as "The Proud Language of Youth Capsule". His greatest contribution to Feng Shui is his Feng Shui ideological science, theoretical system and operational norms. He created a real compass, so he was honored as the father of Feng Shui. Used to refer to Yang Gong's favorite pupil Zeng. Guo Yangzeng's geomantic theory is about the relationship between metaphysics and orifices. That is, the relationship between the hole and the nozzle. Later, it was passed down from generation to generation, and the evolution of geomantic omen in Yang Gong in Qing Dynasty was chaotic. China ancient geomantic omen can be roughly divided into four categories: the first category is the authentic ancient learning of Jiangxi School, the geomantic omen of Guo Yangzeng, and the geomantic omen of Lai Wenjun, which evolved from the geomantic omen of Yang Gong. Both theories are based on the use of anger. Fujian sent the second kind, the Big Dipper Qi Method. The third category; Half Fujian and half Jiangxi. The fourth school of Jianghu. Dragon, sand, cave, water and direction in geomantic omen. Its water and acupoints are the leading elements of Feng Shui in Yang Gong.