A Yuan Dan is formed when reaching Yuan Dan Stage. This causes a visual effect that a lot of people can see. A Yuan Power spiral that could be seen with the naked eye enveloped the skies. Yuan Power swirl transformed into rows of pillars. Dashed into the sky and the practitioner opens his mouth to spit out a thumb sized ball of light. At that light ball’s appearance, the numerous Yuan Power pillars will swiftly pull towards it. In a few short minutes, all of the Yuan Power pillars will be sucked into that unremarkable looking small ball of light. When the last Yuan Power pillar crammed itself into the light ball, that light ball will shine increasingly brighter before the rays of light finally dispersed revealing the pure white thumb-sized bead that the light ball had transformed into. This should be the most obvious sign of a Yuan Dan Stage practitioner, condensing a Yuan Dan tiny star patterns on the surface of a Yuan Dan. When the Dan Yuan was condensed and formed, the importance of the Yin Energy and Yang Energy from the Earthly Yuan Stage and Heavenly Yuan Stage respectively were finally shown. Practitioners who were at the same Yuan Dan Stage had Yuan Dan’s of different qualities and the most important factor that contributed to the quality of the Yuan Dan was Yin Yang Energy. The quality of the Yuan Dan was measured using the scale of Nine Stars.
The Yuan Dan that Lin Zhentian had just formed belonged to the category of Four Star Yuan Dan. This was not considered low, after all, the Yin and Yang Energies that Lin Zhentian used to absorb were merely the most normal kind within Heaven and Earth. If it were not for the fact that he had absorbed a large amount of special Yang Energy from the cave in the mine over this period of time, the quality of his Yuan Dan would at most have reached Two Stars.