1. Open JD.COM application: Open JD.COM application on your mobile phone.

2. Enter the "10 billion subsidy" special session: find it on the homepage or navigation bar, and click to enter the "10 billion subsidy" special session.

3. Choose the goods that need to be collected: browse the special page and choose the goods that you want to buy and hope to get preferential prices with a subsidy of 10 billion yuan.

4. Enter the shopping cart settlement page: click the button marked "Shopping cart" in the toolbar at the top right corner or at the bottom of the screen to enter the shopping cart page and view the list and total amount of the selected goods.

5. Check the conditions and amount of full reduction: the settlement page will display the total order amount and whether it meets the threshold condition of using10 billion subsidy.

6. Order collection operation: On the shopping cart page, you can continue to select the goods you need and add them to the order.

7. Submit the order and pay it: When all the goods that need to form the order have been added to the shopping cart, and the total order amount meets the requirements of10 billion subsidy activity, click the "Submit Order" button on the settlement page.