The phrase is Mandarin Chinese for being in the middle of a retreat, a literal status announcement rather than a character name or catchphrase from a confirmed source. Short foreign language shouts like this circulate on soundboards because the emotion reads clearly even for listeners who do not speak the language. It has become a reusable escape button for edits, shared for moments when someone quits, flees or changes plans at the last second, and its brevity makes it easy to loop, layer or drop into live streams without covering other dialogue.