After discussing things with Master Gong, Li Yuan returned home and sat in his courtyard, deep in thought.0

It seemed to him that everything in this world followed the principles of Yin and Yang. The heaven was Yang; the earth, Yin.1

Heavensense harnessed pure Yang, gathering its energy and channeling it into a forged spirit artifact. When merged with source blood, it brought forth a living formation.0

Earth Appraisal was a method of finding areas of extreme Yin, but not necessarily ghost domains—perhaps places that were on the verge of becoming one.0

And so, whether it was Heavensense or Earth Appraisal, neither alone could forge a fourth rank formation.0

Earth Appraisal only explained how to locate areas of extreme Yin, without detailing how to use that Yin energy to forge; and Heavensense focused on harnessing Yang energy, without specifying where to find...0