No verified source work, character or release year is attached to the Chúc Song Tu clip in the available listing, so it is best understood as a small soundboard item rather than a quotation from a known film, show or song. Its short length and memorable title phrase have helped it circulate as a shareable greeting and reaction sound, passed between creators and listeners who recognise the words rather than a wider franchise. That modest, word-of-mouth circulation explains why it remains useful: it is quick, recognisable and easy to reuse.