What do the letters in license plates represent?

[SadieRose]

Currently, the format of the 92-style motor vehicle license plate in use is "Jing A-12345". The first character is the abbreviation of the municipality, province, or autonomous region, followed by an English letter which represents the issuing authority code of the license plate. For example, "Yu A" is the issuing code of the Chongqing Municipal Public Security Bureau Vehicle Management Office, "Yue B" is the issuing code of the Shenzhen Public Security Bureau Vehicle Management Office in Guangdong Province, and "Xiang O" is the issuing code of the Hunan Provincial Public Security Department Vehicle Management Office. Below is an introduction to license plate numbers: The five digits following the letters are the serial number of the license plate. Generally, they range from 00000 to 99999. When this range is exhausted, the first digit is replaced with an English letter, i.e., A0000-Z9999. If this range is also exhausted, some regions use the format AA000-ZZ999, while others use 0A000-9Z999, followed by 00A00-99Z99 (Hangzhou has already started using this arrangement). However, in many regions across the country, the first digit or letter of the five-digit serial number is designated as a special prefix for different districts, counties, or cities within the region. For example, "E A-K1234" where K represents Jiangxia District in Wuhan City, or "Xiang B-56789" where 5 represents Zhuzhou County in Zhuzhou City, or "Zhe C-T1234" where T indicates a taxi, making this plate a taxi license plate in Wenzhou City.