How can there be donation information after WeChat payment?

The reason for the donation information in WeChat payment is the promotion activities of merchants or the customers' initiative to choose donations.

Wechat payment is a convenient payment method, but in the process of payment, sometimes donation information appears because of the promotion activities of merchants or customers' active choice of donations. Some merchants have set donation options in their promotional activities. If the customer accidentally clicks this option when paying, the payment amount will automatically include the donation amount. In addition, some customers take the initiative to choose donations when paying, and pay the donation amount together with the cost of goods.