Example: Time speed up treasure was super ambiguous and seemingly OP but a couple arcs later author throws in a line that it's apparently not super OP because the effectiveness isn't that great for people at such a high level because they need actual experiences to provide insight
My only gripe is that MC just happens to be a genius for no apparent reason. He's just naturally smarter and better at everyone in the universe at cultivating for some reason. I suppose it's slightly refreshing when compared to the majority of MC's who have golden egg after golden egg handed to them by *fate* but still...
There's a significant lack of details in some cases. The whole thing about how he goes to the Crimson Mountain or whatever for punishment but there's literally no one checking on if he actually did his full time? How does his clan know he fulfilled his entire 100 days? Also the whole gender thing of that girl that keeps showing up in his room is confusing because different pronouns keep getting used to refer to the same person.
On the other hand, there's some really interestingly written lines like "her face became acquainted with the table" or "her face defeated the table" (can't remember the exact wording but it was super hilarious)