this appears to be 网游之最强房东 , the first book from the author of Custom Made Demon King
was surprised to learn that since it doesn't feel dated at all, very pleasant read
I'm really sad about Custom Made Demon king, really like it. Author is too slow to update it though 😅. The only bad thing about it personally is that MC didn't behave like a demon enough, not making unfair contracts with humans by taking advantage of their circumstances and emotions