C1089 Pill Refining Master Association

The pill had a pattern, which meant that the quality of the pill was very high. The pill in Yang Huang's palm was a high-grade pill.

The pill was divided into four grades: low, medium, high, and special.

It was said that there were other grades above the four grades, but Yang Huang did not know what kind of grade it was for the time being. He only knew that there were four grades