Where did "Kanyu" come from?

Where did "Kanyu" come from?

"Huainanzi", an ancient book of the Han Dynasty in my country, said: "Comprehensiveness, male and female know female by sound." In the Eastern Han Dynasty, Xu Shen said: "Wen, heaven is also; Yu, authentic." Kan is the observation of the sky, and Yu refers to the survey site, and the contempt. The study is the study of the movement of the world.

The theory of geomancy in our country is derived from the inheritance of divination techniques before Han. It is based on the Hetu Luoshu, combining the eight trigrams and nine stars and the restraint of the five elements of Yin and Yang. It integrates the movement of the heavenly path with the movement of the earth and the people in it, forming a set of special theoretical systems, thereby inferring or changing people. Good luck and bad luck, longevity and poor.

This kind of activity of looking up at astronomy and surveying geography has been linked with astronomy and geography from the very beginning. In a sense, the science of geomancy is the science of environment and architecture in ancient my country.