1. First, select the "takeaway" option on the homepage of Meituan, enter the location, search for McDonald's, find the store that needs to order food in the search results, and click to enter the store page.

Secondly, after entering the store page, you can select your favorite goods from the menu and add them to the shopping cart. Remember to check the "Use Coupon" option first, and choose the premium coupon of Meituan McDonald's.

3. Finally, after confirming that the order information is correct, click the "Submit Order" button to complete the payment. At this time, the system will automatically calculate the used discount amount and deduct it from the total price.