1. Use cell phone APP to order food: download and install food ordering APPs, such as Meituan, HungryMall, etc. Choose the restaurant and dishes you want on the APP, and then pay online. When you arrive at the high-speed train station, wait for the train to stop at the platform, turn on your cell phone's Bluetooth or mobile network, and send the order information to the service staff on the train. They will deliver the takeaway to your seat.

2. Use phone to order food: Call the restaurant in advance and tell them your location and carriage number on the high-speed train and the dishes you want to order. They will deliver the takeaway to your seat.

3. Purchase inside the high-speed rail station: Buy takeaway food at the restaurant or snack bar inside the high-speed rail station and then enjoy it on the train. Please note that not all high-speed rail stations have food and beverage facilities, so find out what is available at your station in advance.

4. Carry portable meals: If you have booked takeaway food in advance but worry that it won't be delivered in time on the train, you can choose to bring your own portable meals. Make sure your meal is well-packed and easy to carry and eat.