…and i find it interesting. However, there are inconsistencies in details so translator-sama/proofreader-sama might want to fix those.
Anyway, he’s father is confusing. He was aware of his son’s weak constitution so that means he would be having a hard time cultivating qi. Yet, he had the audacity to feel humiliated and disappointed of Lu Fan at the exam. Moreover, he has the pills so why did he give it to LF now and not before…? Or, i think the appropriate question is how come he waited so long before buying them? The world is large, surely he can buy them outside of their city and have his trusted people buy them regardless of their price to other cities/places that auctions them.