It nice how the pain is give a nice quantative description, rather than just leaving it at unbearable. The main point of these stories is the MC having the capacity of bearing it and this was nicely explained. Keep up the work author!
Cultivates qi for two weeks and can beat guards above his level? Is he a genius at martial arts? Does he know techniques that were never mentioned? Otherwise it doesnt make sense.
I feel he got way too much knowledge at once given his low cultivation level. He shouldn't be able to absorb it yet. Or maybe it was much less in reality, we'll see.
Thanks for the chapter!