Yang Junsong, a native of Douzhou in Tang Dynasty, was a famous master of Feng Shui. He usually lives frugally, sympathizes with the poor, helps the weak and spares no effort to help the poor. He is widely respected by the people and is called "the immortal who helps the poor". Yang Junsong is an official of North Korea who is in charge of the geographical work of Lingtai. The official is Dr. Jin Guanglu. When Huang Chao went to Beijing, Yang Junsong and his friends lived in seclusion in Kunlun Mountain. After that, I traveled around the mountains and rivers, studied the momentum and shape of the mountains and rivers, talked about it, taught students and spread the Feng Shui to the people.
There are many controversies about Yang Junsong's works. Classic geomantic omen, such as Jing, Qingnangaoyu, Du Jing, etc. It is said that they were all written by Yang Junsong. However, in terms of style and content, it is different from Yang's other two works, Yaolong Jing and Yi Long Jing. Therefore, some people think that Tian Yu Jing and other books were originally hidden by the imperial court and were brought out when Yang went out to court.