When purchasing something at a department store or shopping mall, anyone can receive a discount on parking fees based on the purchase amount. If I go shopping without my car, I do not receive discounts on parking fees. At that time, when you buy something and pay, you can tell the clerk the license plate number of another person's vehicle in this APP and receive 2% or 2.5% compensation of the purchase amount from the driver of that vehicle. Conversely, if you go to a department store with your car and are unable to purchase items for the amount of time you parked, you can enter your required parking time and vehicle number into this APP and request assistance with parking fees. People who did not bring their vehicles can purchase items. You can get discounted or free parking by telling the clerk your license plate number. After settling the parking fee, the car owner must compensate those who helped with 2% or 2.5% points of the amount helped. Points accumulated in this way can be converted into cash.