1. Log in to the backstage of Pinduoduo merchants and enter the "My Order" page.
2. Find the order to be operated, click the order number and enter the order details page.
3. On the order details page, you can see the customer's contact information, including phone number and delivery address.
4. Send the contact information to the customer. Click the "Private Message" button on the order details page to enter the chat window and send contact information to the customer.