With no confirmed source work, character or release year attached to this upload, Yixi is best understood by how it circulates online as a short soundboard clip. Its four second length makes it easy to save, repost and drop into edits without editing down a longer recording. That portability has helped it function as a reusable reaction sound across short videos and meme pages, where a familiar brief clip can be recognised quickly and used in new contexts without explanation or background knowledge.