Who wrote the book "The Book of Searching for the Land" and which dynasty did it belong to?

The title of this book should be "The Complete Book of Soul Break". It is said that the author is Yang, the founder of geomantic geography, which should be false. Yi, whose real name is Shu Mao, is the fourth son of Yangjia 127. (In the Tang Dynasty, he was the master of Zongchao, the official to Dr. Jin Ziguang Road, and the director of Lingtai. ) was born on the eighth day of March in the first year of Huichang (AD 84 1 year). Yang Junsong, who was born in poverty and was an honest official, was a senior official of the court and regarded wealth and splendor as the past tense. However, he became attached to mountains and rivers, and once he joined in it, he was like a duck to water. As a result, he finally abandoned his official position for the people, stayed away from Kyoto, returned to the south, and practiced on earth with his own geomantic geography. He has always been very frugal, but he sympathizes with the poor, helps the poor in many ways, spares no effort and is deeply respected by the people. He is famous all over the world and is called (Mr. Poverty Alleviation). In the basic theory of geomantic omen, Yang advocates helping the poor according to local conditions, analyzing the terrain and orientation according to the shape observation, so as to choose the best location of yin and yang houses, which gradually evolved into a geomantic omen geography (shape theory), known as the (situation school), (mountain school) or (Jiangxi school), which has a long history and is also known as the (Jiangxi) school. On both sides of the Taiwan Strait, Hong Kong, Macao and Southeast Asia, many people claim that Yang is a poverty alleviation person handed down from generation to generation.