C49 Introduction to Crystals

Xie Qun looked at the unhappy Xie Yi and thought that it was better to explain it to him. Otherwise, this matter would probably be in his heart for a long time, so he said, "Let me tell you the use of these crystals first. Look, there are six different colored crystals here. The green crystals are used to refine flesh, while the yellow crystals are used to refine meridians