What do the letters on license plates in Gansu represent?

[Marissa]

Gansu's license plate letters represent: Gan A is Lanzhou City, Gan B is Jiayuguan City, Gan C is Jinchang City, Gan D is Baiyin City, Gan E is Tianshui City, Gan F is Jiuquan City, Gan G is Zhangye City, Gan H is Wuwei City, Gan J is Dingxi City, Gan K is Longnan City, Gan L is Pingliang City, Gan M is Qingyang City, Gan N is Linxia Hui Autonomous Prefecture, Gan P is Gannan Tibetan Autonomous Prefecture. The vehicle registration authority code consists of 2 characters, composed of a Chinese character and an English letter. The Chinese character is the abbreviation of the province, autonomous region, or municipality directly under the central government, and the English letter is the code of the vehicle management office.