1. Open JD.COM Mall official website and search for the graphics card you want to buy.
2. Enter the product details page to see if there is a "lottery purchase" button.
3. If yes, click the "lottery purchase" button to enter the lottery page.
4. On the lucky draw page, fill in relevant information, such as purchase quantity and delivery address.
5. Click the "Start Lottery" button, and the system will randomly select some lucky users who can buy graphics cards.
6. If you don't get it, you can choose to join the "Supplementary List" and wait until the order is cancelled.
7. If you win the prize, you need to complete the payment within the specified time, otherwise the order will be cancelled.