Overwhelming the Heavens, Starting by Catching Ghosts

A young man unexpectedly transmigrates to another world where the strong prey on the weak.

He unexpectedly awakens a System.

I can get stronger by fighting monsters and leveling up, so why bother cultivating?

Practice martial arts? No way. I can learn them just by spending money, so why train?

Watch as the young man starts by hunting ghosts, then sweeps across all the heavens.