Short reaction sounds like this one circulate widely in online sound collections and in short-form video editing, where creators collect brief vocal hits that can be dropped into a moment without needing context. Guo works in that collection because it is instantly recognisable as a single shouted syllable, even to listeners who do not understand the word, and it can signal surprise, a mistake or a sudden turn. Its tiny length also makes it easy to reuse, so it keeps appearing in memes, gaming clips and reaction edits long after a longer sound would feel repetitive.