Cashback Rebate System

Struggling worker Lin Yuan can barely afford rent until he binds a legal cashback system. Regular purchases double his refund, and charity spending triples it. He helps his crush Li Duo settle her debts and proves doubters wrong. He outwits arrogant rich heirs, buys luxury cars and real estate, acquires wineries and builds his team. Facing unfair competition and suppression from rivals, Lin Yuan stays lawful, fights monopoly and crushes their plots to achieve his comeback.