Where is the license plate number 'Gan' from?

[SanAlex]

Gan is the license plate for Gansu Province. Civilian vehicle license plates in China feature a Chinese character, which is the abbreviation of a municipality directly under the central government or a province, followed by a letter representing the city or district. The combination of the Chinese character and the letter can indicate the origin of the vehicle. License plates, commonly known as vehicle tags, refer to the plates affixed to the front and rear of a vehicle. These plates are typically made of aluminum, sheet iron, plastic, or paper, and display the vehicle's registration number, registration region, and other relevant information. License plates serve as a means of numbering and information registration for vehicles, allowing identification of the vehicle's registered region and facilitating access to the owner's details and registration information through the plate number.