6 hours is not a short time. It is recommended to go to Binhe Road. Known as the "Yellow River Bund", Binhe Road is a green corridor that is tens of kilometers long from east to west. There are many scenic spots along the road, and you can visit them one by one according to your personal preferences.
At noon, it is recommended to try Mazilu Beef Noodles, which can be reached by walking 200 meters east from the Yellow River Iron Bridge.
There is a food street with all kinds of snacks.
The Waterwheel Expo Park is very large and has many things to see and do. You can arrange to rush to Zhongchuan Airport in the afternoon.