1. After entering the 12306 software, you can see five tabs at the bottom of the page. Let's click on the "Business Travel" tab.

2. On the business travel page, we click on "Food Specialty" in the upper left corner.

3. The system will jump to the train information page, and we need to fill in our own train date and train number.

4. You can also use the scanning function in the upper right corner to scan the QR code on the ticket and automatically import the train information.

5. After checking the number of trains, we can see the delivery site of the route, and we choose the takeaway site.

6. After selecting a site, the system will list all the restaurants in the site.