Urban Unlimited Cash Back

Ye Xuan traveled to a parallel world similar to the earth, and obtained a system called infinite cashback.
All the money spent will be returned to him at double the price.
Nima, what kind of work is there, I just spent money to become the richest man in the world!
"How much is this thing, only one hundred thousand, buy it!"
"Ding, cash back 20 Huaxia coins!"
"One million, it's so cheap, pack the ones next to it!"
"Ding, cashback..." Money, power, women, Ye Xuan thinks that all of them are indispensable, um, especially women!