Kou ji, written 口技 in Chinese, is a traditional folk performing art built on vocal imitation, where skilled performers recreate animal calls, nature sounds and everyday noises using only the mouth. It has been performed on stage in China for generations and is still taught as a specialty act. Online, very short kou ji recordings circulate as novelty soundboard clips, shared for the contrast between their tiny length and the control behind the imitation. This brief example fits that modern use, as a quick reaction and comedy sound.