Qingnangjing consists of upper, middle and lower volumes. The first volume describes the positioning theory of the integration of yin and yang, the positioning of five rivers and calligraphy, which is called "Hua Shi"; In the middle volume, I talk about the power of the attachment and orientation of shape and gas between heaven and earth, which is called "chemical machine"; The second volume explains the influence of qi and shape, orientation and the coordination of various laws between heaven and earth, which is called "transformation"
Although Qingnangjing has only 400 words, it is profound, concise, straightforward and not mysterious, but it reveals Luan Tou's method of regulating qi and feng shui, laying the foundation stone for the development of feng shui. Guo Pu (Jin) got it, wrote "Burial Book", and quoted the original text in many places. Yang Junsong (Tang Dynasty) got it, but his works "Pride" and "Tianyu" are just the experience of learning from "Qingnangjing". The Preface to Qingnang by Emperor Wendi Zeng (Tang Dynasty) only expounds its characters. Jiang Dahong (late Ming Dynasty) annotated Qingnangjing. Although the annotation is long, it is particularly difficult to be detailed.