Quanjude's roast duck can be taken out. I brought it to my classmates at school and brought it from Beijing to Jiangsu. It's a vacuum packaging bag, and the outside is a small carton of Quanjude, which is now ready-packed. Of course, it is fresher than the supermarket for a long time. One day and one night's train, anyway, two or three days to eat is very fresh. Just heat it in the microwave oven. And it's much cheaper than eating in a store.