There is a Chaoyang supermarket (about a few hundred meters away) next to Xuzhou Station. There are many cheap and delicious things in it, such as convenience, biscuits and spicy strips. Things in supermarkets are generally very cheap. If you need heating, there is also a microwave oven, which provides this service for guests free of charge.
Or walk across the street from the train station to baiyun hotel, and there is an alley on the right, with snack bars and very cheap things.
There is also a traffic light on the left-hand side of the railway station, and there is a McDonald's, where things are not only fresh, but also provide guests with free rest and wifi.