Which region does the license plate 'Shaan U' belong to?

[VanLayla]

Shaan U is the license plate for Xi'an, where 'Shaan' is the abbreviation for Shaanxi Province. The license plate codes in Shaanxi Province range from Shaan A to Shaan V, assigned as follows: Shaan A for Xi'an, Shaan B for Tongchuan, Shaan C for Baoji, Shaan D for Xianyang, Shaan E for Weinan, Shaan F for Hanzhong, Shaan G for Ankang, Shaan H for Shangluo, Shaan J for Yan'an, Shaan K for Yulin, and Shaan V for Yangling High-Tech Agricultural Demonstration Zone. Here is the classification of license plate colors: 1. Blue plates are for small vehicles. 2. Yellow plates are for large vehicles, agricultural vehicles, and training vehicles. 3. White plates are for special vehicles, such as military and police cars. 4. Black plates are for vehicles brought into the country by foreign individuals or enterprises. 5. Gradient green plates represent small new energy vehicles.