So, I like this in large part because the MC has decent charisma, and actually good game. Of course, I'd bet money that if it weren't for the fact that China says "no" to porn this would 1000% be more explicit. I'd say for a story like this that's actually a mark against it, because I can absolutely see a Korean pornhwa with this exact premise (hell there probably is one and I haven't read it).
I will not say this is good, because fundamentally this is a very bland recipe for a story. However, there is a fair amount of fun that can be pulled out of it. If you're someone that can't help but tear apart of a story due to obvious flaws then I can't recommend this, but if you're able to just enjoy something for what it is (and this is a simple wish fulfilment harem story) then go for it. It's not painfully bad like many other Chinese works are, and I don't think it'll get pointlessly convoluted as I think signs of that would already be showing.