Generally speaking, you can't, because you usually go to a store that has opened a social relief fund, and you can use the relief fund when you pay. When we use the QR code of WeChat to make payment, the system will automatically deduct the money. In addition to these, you can also buy video members or choose WeChat payment when paying. Any merchant that supports WeChat payment can use WeChat to reduce payment.

At present, the WeChat payment relief fund is positioned as a reward mechanism in the WeChat system, mainly from various activities jointly organized by WeChat and banks. So you have to have a mobile bank card.

You can click more in the chat window of WeChat Pay to get a reduction, then click the payment discount to enter the activity page, click the gold coin below to exchange gifts, and click WeChat Pay to get a reduction and exchange gold coins.