Terrifying Pill Refinement Success Rate

Gerald looked at Chuck Hao and hesitated before saying, "Is this kid refining Celestial Pills for the first time? Why do I feel he's incredibly familiar?" Susan replied, "He is refining them for the first time." The process of imprinting the Seal Formula was quite lengthy. After a round of hand imprints, Chuck Hao burned the herbs inside with flames. Then, another round of hand imprints followed! This process lasted three rounds, and even Chuck Hao, despite his efforts, spent half a day on it....