The phrase comes from classical Chinese historical storytelling and is associated here with New Three Kingdoms, the 2010 television adaptation of Romance of the Three Kingdoms. In that tradition, defeated generals and loyal officials sometimes choose death over capture or disgrace, and the four-character expression sums up that choice in a formal, literary way. Clips from the series circulate widely in Chinese video edits and fan communities, where short spoken lines are reused out of context as dramatic reactions, which is how this brief excerpt became a standalone sound for defeat and final farewell edits online today.