Pinduoduo's preferential amount will not be deducted slowly when you overpay, and your money will not be deducted after the reduced amount when you pay.

Simply put, no. The preferential money has been reduced.

In addition, paying more is to deduct money from your bank card. Click "Settings" on the home page. There will be a wallet and you can find your bill. To use Pinduoduo, just open Pinduoduo on your mobile phone, click on the product you want to buy, select Pinduoduo Payment on the payment page, and then click "Pay Now". The balance in Duoduo's wallet will be displayed below. If you have enough money, you can pay the balance directly. If not, please slide the slider on the right to show more money in your wallet. The payment method is to add the money in Duoduo wallet to the bound bank card for payment, and enter the payment password to successfully use the money in Duoduo wallet.