The origin of this clip is not documented in the supplied information, so no source work, performer, or year is stated here. Yi qing er chu is a familiar Chinese idiom meaning perfectly clear, used in everyday speech for facts or explanations that leave no confusion. Online, a short clip under this name can serve as a compact marker of clarity in fast edits, lessons, and reaction-style posts. Its reuse depends on the plain meaning of the phrase and its short length, which lets creators close a point quickly and move on to the next image or caption.