How to improve the knowledge of geographical geomantic omen?

Looking at the face is relatively simple, and Feng Shui is the most difficult. If you are interested, you can learn the basic knowledge of the Book of Changes first, because you need it no matter what you learn. After that, I suggest you learn eight characters and six hexagrams, plum blossoms are easy to count, six hexagrams and plum blossoms are easy to count. I recommend six hexagrams. There are many factions of feng shui, and beginners can also learn Jin Suoyu. Ten Books of Yangzhai, A Study of Kong Xuan in Song Dynasty, A Book of Understanding Feng Shui, The First Book of Reading Feng Shui, Kong Xuan's Brilliance, etc. There are many eight-character books, such as Add and Subtract Oracle Inscriptions, Yi Mao, Book of Changes, Book of Divination, etc. I suggest you take a look at Qin's On Poetry as an introduction. You don't need to ask me when you have mastered this knowledge. You can already do it.