Yueqin, China, late 19th century. Moon guitar. Two double-courses of strings. Ten frets. Circular, wooden body with metal tongue inside that vibrates sympathetically when instrument is played. The yueqin’s name is also commonly translated as "moon lute." Yueqin tradition dates to the Han dynasty (206 BC-220 AD). The instrument is most often found today in Beijing opera ensembles and as an accompaniment in dance songs. Played with a plectrum.