Hanzhong (汉中; Hànzhōng) is a city in Shaanxi Province.
Hanzhong is famous throughout China for its "Liang Pi," cold rice noodles served with a spicy and sour sauce and usually served with vegetables such as cucumbers, carrots or sprouts.
There is a hot version of Liang Pi, which although not as good is also readily available.
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.