Which region does a temporary license plate starting with 'A' belong to?

[Sadie]

Currently, there is no temporary license plate that starts with 'A'. The first character of a license plate is a Chinese character representing the provincial-level administrative region where the vehicle is registered, which is the abbreviation of provinces, municipalities directly under the central government, or autonomous regions. The second character of the license plate is an English letter, representing the prefecture-level administrative region where the vehicle is registered, which is the letter code for prefecture-level cities, regions, autonomous prefectures, or leagues. Generally, the letter 'A' is assigned to the capital city, the capital of an autonomous region, or the central urban area of a municipality directly under the central government, and the subsequent letters are not ranked in any particular order. License plates, commonly known as vehicle plates, refer to the plates hung on the front and rear of a vehicle. They are usually made of aluminum, iron, plastic, or paper, and display the vehicle's registration number, registration region, or other relevant information.