why do countries such as South Korea and China have latin numbers and letters on their license plates when their language doesn’t use them?

Question

Edit: Latin letters and numbers might not be the right word. I meant letters such as AaBbCc and numbers such as 123.

In: 3829

Answer 1

Because In Chinese writing, there aren’t really “alphabet” letters so you would have to use an all numeric license plate using Chinese characters, where the two and three might be confusing to read, or you’d have to incorporate easy to read word-characters.