Alex spent the next two weeks teaching Wu Shun about Alchemy. When he didn't do that, he spent his time on the Wood Spiritual pill that he had wanted to make for such a long time.
When he found himself at a block, he shifted his focus to the Spirit pill and tried to downgrade the ingredients.
This downgrade was the hardest downgrade Alex had to do until now. The most important part about downgrading was understanding an ingredient from the inside out and trying to find a lower version of it that did the same thing.
However, as there was no Immortal Ranked ingredient, it was a difficult task for him. Taking the knowledge about the pill from his memory was not the easiest way for him to improve it.
It was the difference between memorizing an answer for the test and understanding the context behind the question to naturally write an answer. One needed far less effort than the other one.