Kou Lian appears as a short user shared soundboard clip, and its exact original source is not clearly documented in the information available for this page. That lack of a single confirmed origin is common for brief clips that circulate through edits, chats and soundboard collections, where the sound itself becomes recognisable through repeated use rather than through a film, show or song. It remains in circulation because its two second length fits modern short form editing, letting creators reuse it quickly without needing context or a long setup.