"There must be some restrictions?" Tang Yu also realized that there must be something wrong with it, so he asked with a smile.

"Yes!"

may have been frightened. The practitioner, who is also a very good teacher, nodded and said with a smirk on his face: "The resources that need to be consumed are very large. The first section needs ten magic crystals, the second section needs 100, and the third section needs 1000. Section IV..."

Some of Tang Yu was frightened and could not help interrupting the practitioner's words. He said in silence, "Don't tell me that the number of evil crystals needed in section IV of refinement is...