Hanzhong (汉中; Hànzhōng) is a city in Shaanxi Province.
Hanzhong is famous throughout China for its 汉中热米皮 which are Hot Rice Noodles, they are steamed thick rice noodles that are served with a hot pepper sause. Hanzhong is also famous for its 菜豆腐 Cai4Dou4Fu3 which is a type of thicker tofu that is eaten with a spicy garnish on the side. These are eaten any time of the day.
Worth trying are "Rou Jia Muo" which are essentially Chinese hamburgers and "Niu Rou Mian," wheat noodles with beef. Both items are readily available from street vendors.
Culinarily, Hanzhong is part of Sichuan and sa such the food in the city is generally spicy.