Why is the license plate number of Xuzhou designated as Su C?

[McMalia]

This is determined based on the chronological order of establishing prefecture-level cities, hence Xuzhou's license plate is designated as Su C. Specific details are as follows: 1. Xuzhou: Xuzhou is a prefecture-level city in Jiangsu Province. The Chinese character at the beginning of a license plate number is the abbreviation of the province or municipality directly under the central government, and the letter following the first character represents the city or district. From the Chinese character and letter on the license plate, one can tell where the vehicle belongs. 2. Representation: Su A represents Nanjing, Su B represents Wuxi, Su C represents Xuzhou, Su D represents Changzhou, Su E represents Suzhou, Su F represents Nantong, Su G represents Lianyungang, Su H represents Huai'an, Su J represents Yancheng, Su K represents Yangzhou, Su L represents Zhenjiang, Su M represents Taizhou, Su N represents Suqian.