Where is the license plate number starting with 'Dong' from?

[SawyerLynn]

There is no license plate number starting with the character 'Dong'. License plate numbers consist of the abbreviation of the province, the letter code of the prefecture-level city, and the license plate number digits. License plates serve as identification and information registration for vehicles, with the primary purpose of identifying the vehicle's region of origin and enabling the tracing of the vehicle's owner and registration details through the license plate. There are three encoding rules for the 5-digit license plate number sequence: 1. Each digit of the sequence uses Arabic numerals; 2. Each digit of the sequence can individually use English letters, with the letters O and I from the 26 English letters being excluded; 3. The sequence allows for the inclusion of 2 English letters, with the letters O and I from the 26 English letters being excluded.