Yin Energy is cold and icy. It can be found between Heaven and Earth. This energy is very useful for Earthly Yuan Stage as they must absorb it into one’s body. Special Yin Energy can be found but are very expensive. Can be classified into nine grades. Grade 1 being the lowest, while Grade 9 being the highest. For most Earthly Yuan practitioners, when they absorb Yin Energy from between Heaven and Earth, it is at best Grade 2 or Grade 3.