Modification method:

1. Open Douyin and click the three horizontal lines in the upper right corner under My Options.

2. In the pop-up menu bar, click My Orders.

3. Enter the order interface and click the order that needs to be changed.

4. In the order details interface, click Contact the merchant to help modify it.

If the goods have been shipped and the buyer needs to refund part of the money, negotiate with the merchant, apply for a refund, fill in the refund postage, and that's it.