The Water Dragon Classic is a classic work that specifically discusses the various forms and auspicious and inauspicious choices of water dragons (in feng shui, dragons usually refer to geographical situations, such as water flow or water bodies). The following is a detailed introduction to its main content:

1、 Book Background and Author
Time of completion and author: The Water Dragon Classic was written by the famous feng shui master Jiang Dahong during the late Ming and early Qing dynasties. The version of the book is precious, and the original book is stored in the Forbidden City. It is an exquisite copy from the Kangxi period of the Qing Dynasty, and the quality of the book is quite good. The version value is very high. Later published and distributed by Hainan Publishing House in 2003.
Status and Influence: The Water Dragon Classic holds an important position in the field of feng shui and is a must read for studying water dragon feng shui. It systematically and thoroughly summarizes the water dragon phase method, specializing in the beauty of the Pingyang water method, and can be regarded as a masterpiece among many feng shui works.

2、 Content Structure
Content Overview: The “Water Dragon Sutra” elaborates in detail on various methods of recognizing and establishing the water system in the Yin Yang two mansions, with illustrations and text. The book not only contains rich theoretical knowledge, but also emphasizes the teaching of practical water methods.
Chapter composition: The book may contain multiple chapters or sections, each of which delves into the different forms or auspicious choices of water dragons.

3、 Main theories and viewpoints
Water Dragon Form:
The Water Dragon Classic provides a detailed description of various forms of water dragons, such as bending, looking back, circling, flying diagonally, charging straight, jumping back, and coming and going. These forms all reflect the auspiciousness or inauspiciousness of the water form.
Choosing between good and bad:
The book not only describes the forms of water dragons, but also further explores how to judge good or bad based on these forms. By exploring the origin of the water dragon through the analysis of qi, celestial stars, orientation, and drinking shape and breathing points, this provides readers with a basis for judging the auspiciousness or inauspiciousness of the water dragon.

Yin Yang Two Houses Water Recognition Bureau:
The Water Dragon Classic elaborates in detail on how the Yin Yang two mansions recognize and establish the water system. These methods include how to observe the shape of water flow, how to determine the auspicious and inauspicious directions of water, etc., providing important guidance for feng shui practice.

4、 Practical application and impact
Practical application:
The Water Dragon Classic is not only a theoretical work, but also has strong practical application value. In ancient times, many people would observe and analyze water flow patterns based on the theories in books, in order to predict good or bad fortune and make feng shui layouts.
In modern urban planning, architectural design and other fields, we can also draw on the concepts and methods in the “Water Dragon Classic” to achieve harmonious coexistence between humans and nature.
Profound impact:
The Water Dragon Classic has had a profound impact on the development of Feng Shui in later generations. Its theories and viewpoints have been widely quoted and referenced by later Feng Shui masters, becoming an important reference in the field of Feng Shui.

5、 Modern Values and Controversy
Modern Value:
In modern society, the Water Dragon Classic still has certain reference value. It can help people better understand the theories and perspectives of feng shui, as well as how to improve fortune and quality of life by observing and analyzing water flow patterns.
Controversy and Criticism:

Of course, the Water Dragon Classic also faces some controversy and criticism. Some people believe that its theory is too superstitious and lacks scientific basis; But others believe that although it has some truth, it cannot be completely relied upon to predict and change fate. We need to maintain an objective and rational attitude towards these controversies and criticisms.

The Shuilong Jing is a classic feng shui work that combines theory and practice, with high research and practical value.