Kai Gua Wanjia Cong 0 Shengji

Born poor in the slums, Sun Ran is a naturally gifted game hacker. He used many alt characters running cheats in various virtual worlds to make money outside the law, until he got caught and banned by the admins, which also cost him a nine-hundred-million fine. To pay for his debts, he worked out a deal with the central computer, to become the upholder of justice. He will face off against the game hackers and cheating players in a fierce battle of wits.

(Source: Kuaikan, translated)