Primordial Chaos Dragon Tower: Harem System

I read until ch 259. It's a decent harem / smut novel where MC is gaining skills quickly and extending his harem every 30-40 chapters.  Since this is not my first novel, this feels a bit similar to others I have read so far. Since it had high ranking on webnovel I tried it, but ... it isn't that much special than others I have read. For those liking harem novels this might work, but I think the skills/cultivation is a bit weak in this story.