Pretty much the same thing as "Rebirth of the urban immortal" or "Strongest abandoned son", main difference is that the MC in this one wants to return to the cultivation world to have revenge, so this is going to be a long long story. For those who haven't read those two, the story in this one goes something like this, the MC has an accident in this world and is sent to the fantasy one, he cultivates for millennia and when he's about to become an immortal he's betrayed, he somehow manages to return to his body in the real world and 1 year has passed since his accident. That's ch1, from there he puts people in their place, protects his family, makes tons of money and tries to cultivate to go back to the fantasy world. That's the gist of it in a nutshell.
Story-wise as you can see it's nothing special, typical transmigration and cultivation isekai with a twist, I don't expect to see anything special in the story at all. Character-wise, I prefer this to "Rebirth of the im....", the MC of that manhua was an insufrable and pedantic snob, and while this one is similar to "Strongest abandoned son" in most aspects, it has a more streamlined story.
As for the art, it's good, feels a bit old in style. In any case, there haven't been many fights at all so can't say how it does in that department.

Be warn that the first 10 chapters' translation is horrid, fortunately it improves somewhat when another group picks up after ch 12.