Yi Zhu Xiang is a Chinese phrase that literally means one stick of incense, and in Chinese it is also used to describe the time it takes for such a stick to burn. As a sound clip, it circulates as a brief meme sound rather than as a quote tied to one famous scene. Its appeal online comes from that compact, ritual-sounding quality: creators can borrow a cultural image of waiting, patience or ceremony and compress it into less than a second. That makes it useful as a quick joke, a timing marker or a dramatic beat in short-form video.