C389 An Unexpected Divine Pellet Grade

"How could this be?" Faang Changsheng, who was holding the pill formula of the Reverse Yang Pill in his hand, stared at Han Binn with his mouth agape. He had an expression of disbelief on his face as he asked.

"That's why the method to refine this pill will absolutely bring about endless obstacles to the success rate!" The youth, who had already known the secret behind it