Cheng Cheng Hanji circulates online as a short viral sound rather than a clip with a widely documented origin, and it is best understood through its use in memes and short-form edits. Its title has become its hook, making it easy to search, share, and recognise even without knowing the original context. Creators reuse it because the chant-like rhythm works across languages and formats, from reaction videos to dance edits, and its twenty-second length fits the fast pace of modern feeds. That flexibility has kept it in rotation long after its first viral moment.