It's important to note that:
* Variations exist: The name can also be found in other East Asian countries like China, Vietnam, and Japan, though it's less common. These variations may have slightly different pronunciations and characters depending on the language.
* Originality: The exact origin of the surname itself within Korea is unclear, but it's likely to have a long history within the Korean peninsula.
If you're interested in learning more about the specific origin of a particular person with the surname Chung, additional information like their geographic location or family history would be helpful.