C803 Refinery Failure?

"Kid, there's only thirty minutes left. I want to see how you will refine the Yun Huan Dan."

Ling’s sneered, in half an hour, no matter how fast Wu Chen was, it was impossible to refine a Fifth-rank Pill, let alone, the pellet he refined, was one of the hardest pellets to refine out of the Fifth-rank Pill. Even if he truly knew the method to refine a Yun Huan Dan