If the license plate of a car is erased and repaired, it is against the regulations. The license plate is painted, and the driver can't fix it himself. The license plate was originally painted with reflective stickers, and the owner himself made it up with ordinary paint or even correction fluid. It's very likely that even the surveillance cameras can't take a clear picture.
If the license plate is damaged, the owner should apply for replacement, and immediately remove and replace the license plate at the vehicle management office.