has to wear a set of customised acrylic nails on the right hand. From simple plucking with the thumb and index finger and saoxian (sweeping one's fingers across all strings with gusto) to yaozhi (tilting the instrument and using the middle finger to continuously cut across the strings) and lunzou (by plucking with all five fingers, one after another in a wavelike motion), the playing techniques of the pipa are visibly dimensionless. Its tuning is A2-D3-E3-A3. Zhongruan (中阮) The zhongruan plays the role of the tenor in this section. Its four strings are tuned to G2-D3-G3-D4. The instrument can be played using a plectrum similar to a guitar pick, as with the liuqin, or using a set of 2 to 5 acrylic fingernails. Mainstream ruan players use plectrums, though there are some schools which teach the fingernail technique, similar to that of the pipa. Pipa players who play ruan as a second instrument also use fingernails. Plectrums produce a louder and clearer tone, which makes them suitable for orchestral use. Fingernails allow performance of polyphonic solo music, however this advantage is not useful in orchestras, where the zhongruan mainly plays the accompaniment. It possesses a very mellow tone. Daruan (大阮) The daruan is the bass lute. A larger version of the zhongruan with strings tuned to a perfect fourth lower: D2-A2-D3-A3. Soloists generally use the D-A-D-A tuning, as it allows easy performance of diatonic chords. Some orchestral players tune to C-G-D-A, which is the same as cello tuning. The advantage of using C-G-D-A in orchestras is so that the daruan can easily double the cello part. Other members of the ruan family are gaoyinruan (soprano, tuning G3-D4-G4-D5); xiaoruan (alto, tuning D3-A3-D4-A4) and diyinruan (contrabass, tuning G1-D2-G2-D3). Sanxian (三弦) The sanxian is the only plucked string instrument without frets. As can be inferred from the name (san, lit. three; xian, lit. string), it has three strings. The sanxian family of instruments is very large, with different variants used in different tribes in China. The orchestra often uses dasanxian (da, lit. large) has a soundbox covered on both sides with python skin. Its sound is forceful, penetrating and articulated; in fact, a single sanxian can be clearly heard even in a 70-member orchestra. It has a strong folk flavour, which often puts it in the limelight when in usage with other instruments. For this reason too, it is not suitable for playing