The Tycoon's Life: The More I Spend, the More Money I Make

Lin Dong, an unkempt man who does nothing but bury his head in writing, is rejected when he confesses his feelings. Then he awakens a tycoon-spending System that gives him massive cashback every time he spends! He buys luxury goods and frequents high-end venues, leaving everyone who once looked down on him dumbfounded as he begins a carefree, urban comeback story! Could you polish this blurb for me?