Where is the license plate 'Dong C' from?

[LaFaith]

Currently, there is no license plate with the prefix 'Dong C'. Here is an introduction about license plates: 1. The first character of a license plate is a Chinese character, representing the abbreviation of the province where the vehicle is registered. For example, Sichuan is 'Chuan', Beijing is 'Jing', Chongqing is 'Yu', and Shanghai is 'Hu'. 2. The second character of a license plate is an English letter, representing the code of the prefecture-level city where the vehicle is registered. 'A' stands for the provincial capital, 'B' for the second-largest city in the province, 'C' for the third-largest city, and so on. 3. License plates, commonly known as vehicle plates, are 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 area, or other relevant information. 4. License plates serve as a numbering and information registration system for vehicles. Their main purpose is to identify the region to which the vehicle belongs and to trace the vehicle's owner and registration details through the license plate.