What does dry yuan mean in geomantic omen?

There are four virtues in doing things: yuan, constancy, reason and truth. Yuan is the first of the four virtues, dry yuan, dry yuan. This means the beginning of heaven. Yuan represents the beginning of spring.

"Quoted from the book of changes, the first hexagram, Xun, one of the ten wings. Greatness is the beginning of everything, and it is the unity of heaven. Cloud and rain, goods and logistics. Daming began at the end, when six people succeeded in learning and six dragons ruled the sky. The change of the avenue, its life is positive, which is conducive to maintaining peace and harmony. The first ordinary thing, Xianning, the world. ?

The dry yuan here is dry yuan, dry yuan is the sky, yuan is the beginning, and dry yuan is the beginning of the day. The vigorous spirit of Ganyuan is the power resource on which everything depends for its generation and transformation. This dynamic and endless power resource runs through the whole process of the operation of Heaven.