*Early on MC finds a dungeon that only he knows about, yet he's done nothing about it.
*He gets an evolving weapon from the dungeon that we see the stats of once, then never again. Despite the fact it would now have upgraded as it was a growth weapon.
*He's got a cheat that can look up anything, yet he doesn't use it to help his friends brother anonymously from the Demon Seed/Coma. Instead he has a one track mind to kill him to raise tension. Seriously, there's so many other ways he could have gone about this.
*The shop he's set up on the dark web answering questions could be interesting, and bring in new plot threads. So far it's pretty pointless, though.
*His replacing the original MC of the story as the Harem Master is getting a bit annoying.
At one point out of nowhere Zhang Tie suddenly gets popular with the ladies despite being an awkward pervert. Then over the course of a couple of chapters he has s*x with hundreds and hundreds of women. It's the only time he even gets even a second glance within the first 400 odd chapters, and right after it's finished he goes to another sect to be the scrub newbie at the bottom of the barrel, and it's never really mentioned again.
These few chapters serve... just zero story purpose, and could quite easily be cut out