From Wikipedia
Korean wind chimes (Korean: 풍경, romanized: punggyeong, lit. 'wind bell') are various traditional bells hung from the exterior corners of Korean Buddhist temples, and functioning as a wind chime. The bell's clapper is often in the shape of a fish, an auspicious sign in Buddhism.
An elaborate gilt bronze style of Korean wind chime and dragon's head finial became a type of object in later Silla / early Goryeo art.