Translated by Micheal John Paton
Jiang Dahong wrote the Water Dragon Classic which had been secretly stored by the Form School but there were many errors in what had been passed down. My friend, Lord Zhang of Danyuan, delved into the studies of the land and obtained the true volume of revisions by Cheng Yating and copied it out by hand. However, not being concerned with this, I was, therefore, not anxious to seek to read it.
At the end of autumn in bingyin I stayed at Yu Mountain and saw that the collection of the owner of the Zhaokuang chamber, which represented 2,000 volumes of publications, was almost complete. He reported that he had an even greater desire to seek the true volume of the Water Dragon Classic from amongst the rest at Danyuan. I am certain that this was for the benefit of later scholars. From a match of corresponding writings, clearly and happily the true remnants were judged. Naturally the benefits extended from this are extensive in clearing up the obscurity surrounding Master Pang's book. As to its origins the whole story is detailed in the preface of Mr. Yating and so I will not repeat it here.
Postscript by Lou Dong, Cao Pu of the Yinxi clan
In Lou Dong's house at Danyuan there is one volume of the Water Dragon Classic by Among the Clouds Jiang Dahong with revisions by Crane City Cheng Yating, which is very much unlike the volumes of the secret transcripts of the experts in kanyu. There is no difference between its writings on the situation of trunks and branches and those of the mountain dragon. The meaning is clear to the skilful experts of the art with ability who follow Yang Yi and pierce the subtleties and who understand well that the forged volumes that have been passed down are contemptible.
The preface speaks of considering the water dragon as the body and considering the Nine Palaces, the Three Principles, the Changes, the trigrams and taking advantage of qi as the function and the body. This study reaches everywhere and does not focus on the theories of one school. With spirit and clarity it holds the form and body of the water dragon and the subtleties qi as the principle within it. It is satisfaction within itself. The disciples of this generation only know the theories such as discerning the correct in the principles of the earth and completely altering qi as the principle. All have thought that Dahong did not discuss qi as the principle. They did not pry deeply into Dahong's scholarship.
Remarks by Zhang Haipeng of Qinquan