Commonly referred to as “Chinese guitar”, is an ancient four-stringed moon-shaped lute with long and straight neck and various number of frets, dated back at least to Qin Daynasty (around 200 BC). Ruan is used to Ruan – Chinese guitarbe called “p’i-p’a” (pipa) or qin-pipa. Since the introduction of the oud-like instrument through the “silk-road” around 5th century, a new type of “pipa” with pear-shaped body and bent neck has been gradually developed into the present form since the Tang Dynasty (618-917AD), and the name pipa, which used to be a generic term for all pluck string lutes, has been specifically given to this newly-developed version, whereas the old form of pipa with straight-neck and round body got the name “Ruan”, after the name of the grand master of this instrument, Ruan Xian who was one of the seven great scholars known as “Seven Sages of the Bamboo Grove” in Chinese history of the 3rd century (the Six Dynasties). They were truely good friends and did spend much time together in arts and wine during one of the darkest periods in Chinese history. Yueqin – Chinese moon-shaped luteRuan Xian and Ji Kang (master of guqin, Chinese 7-stringed zither), are most famous for their musical achievements and the life as true artists. The Ruan is mostly used for Peking opera, and now also in modern Chinese orchestra. There are a family of ruan of various size including “Zhong Ruan” (middle Ruan) and “Da Ruan” (large Ruan) used in the same sense as viola and cello in western orchestra.