"Instructions for Geography".
The book "What You Need to Know About Geography" was written by two brothers, Xu Shanji and Xu Shanshu. It is a very authoritative masterpiece that specifically elaborates on the theory and application of Feng Shui.
Since this book came into being, it has been recommended by all xingluan experts. Anyone who studies the xingluan of dragon caves must read this book. This book discusses the water of Longsha Cave in a comprehensive and detailed manner; it is not just an excerpt from the predecessors. Cheng Ba also tells everything about his thoughts, thoughts, and experiences, being honest and not hiding anything private.