Where is the license plate 'Hai A' from?

[LeLevi]

Hai A is the license plate of the Navy Headquarters, belonging to the sixth-generation military vehicle license plate '2004 Style'. The license plate was put into use on December 1, 2004. More information about military license plates is as follows: 1. The license plate is made of pressed aluminum alloy, with a white background. The surface film features an invisible military emblem and serpentine anti-counterfeiting lines. 2. The first character of the prefix is in red, while the rest are in black. The font is an isometric typeface with rounded curves. 3. The license plate has a 7-digit number, with the prefix consisting of a Chinese character followed by one English letter. The first prefix for the Central Military Commission Headquarters is 'Jun'. Army groups no longer use a separate prefix but follow the prefix of their respective military region. The Navy uses 'Hai', and the Air Force uses 'Kong'. The first character of the prefix for each military region is a Chinese character.