Despite the poor quality and the heavy pill poison of the four Immortal Pills, don't forget that it's the first time Li Zhirui successfully refined them, achieving such a high pill formation rate.
Of course, this one instance doesn't mean much—it might have just been a stroke of luck. The actual pill formation rate requires multiple more refinements to conclude accurately.
Li Zhirui is not in a hurry to continue with alchemy; instead, he picks up an Enlightenment Immortal Pill, carefully studying it in his hand and inserting his Divine Sense into it. Upon detecting pill poison, he activates the Purification Principle in his palm to completely cleanse it.
About a quarter of an hour later, the Immortal Pill he held transformed from its dull, blotchy appearance into a top-grade Immortal Pill emitting a gentle jade luster, with distinct pill patterns.
