Not only here, but in the previous lives of Ouyang Yun, such situations in various professions were also abundant.
Ouyang Yun picked up the booklet and browsed through it word by word.
Some of the knowledge was inaccurately written; as a former Sixth-Grade Alchemist, Ouyang Yun easily noticed some discrepancies.
But these are not important; what matters is the pill formula attached in the last few pages.
A very common First Grade Qi Gathering Pill formula, many versions of this formula have circulated, but few can actually refine it.
To be honest, Qi Gathering Pills aren't that easy to refine; even Ouyang Yun in his previous life did not rely on Qi Gathering Pills to step into the realm of First-Grade Alchemist.
From this, it can be seen the 'secret manual' author's perfunctory.
However, this is the effect that Ouyang Yun wants.
Otherwise, how can he showcase his genius?
