Gan xie is a common Mandarin expression for thank you, written with the characters 感謝, and the same characters are also used in Japanese for gratitude. Short clips of everyday phrases like this circulate widely as reaction sounds because they are instantly understandable in context, even for viewers who do not speak the language. Creators reuse them to add a polite, human touch to videos, livestreams and memes, especially when a longer speech would break the pace. Its brevity is part of its appeal: one quick word of thanks fits neatly into fast edits and short-form content.