The Martial Arts Overlord Starts Getting Stronger by Paying to Win

If getting stronger costs money, then why the hell should I get stronger? The whole world is swept up in martial arts, and demons run rampant. Su Rendong, a street thug from the outer city, initially looked down on the System. It wasn't until he was at death's door that he was forced to spend his savings to improve his martial arts. After getting a taste of the benefits, Su Rendong realized that this was a money-burning System. And so, in these chaotic times, he worked desperately to make money while using cheats to cultivate.