This novel is great in manny aspects, but if youcan't handle a immature/idiotic/retarded MC, I would steer away. I have read up to chapter 385, and the MC goes from actual development, and then suddenly all of it is lost, and you read about a retarded toddler, or a kindergardner who is close to being mentaly challanged. The main problem of this, is that we arereading about somone who is an *****, with experiance of war and blood and the harshness of the world, and at manny times throu the novel acknowlages this, ad actualy gives the illusion of maturing in increments. He goes from a mature responseble paragon for hes sect in the heat of the moment/some important times. To a dribbling gradeschooler with downs in about 0-100 in 0.001 sec flat. It is as if we are reading about two completly different people, and it only keeps on getting worse, he actualy becomes dumber in he's "moments" as the novel goes on. If you have problems reding about idiotic MC's who you doubt can even muster the intelligence to open a door, then this MC wil probably give you truble reading the novel.
When it comes to world building, the world unfolds in a natural and even pace as cultivation levels or political things in the sect unfolds.