Can a voluntarily downgraded driver's license be restored?

[Patel]

A driver's license that has been voluntarily downgraded cannot be restored. Here is relevant information about driver's licenses: Driving requirements: According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses," the permitted driving scope for a C1 license includes small and mini passenger vehicles, light and mini cargo vehicles, and light, small, and mini special-purpose vehicles. Small passenger vehicles must have a seating capacity of 9 or fewer people. Based on this standard, a C1 license holder cannot drive vehicles with more than 9 seats. Requirements for test vehicles: Light general cargo vehicles with a length of no less than 5 meters, or small general passenger vehicles with a length of no less than 4 meters, or sedans with a length of no less than 4 meters.