The shape of Lang Duoyi resembles an erhu. The barrel, stem and bow are all made of bamboo. One end of the barrel is covered with bamboo shoots, and the strings and bows are made of "chicken screw" fine rattan. When playing, the left hand holds the piano to press the strings, and the right hand holds the bow to play, the sound is soft and the volume is low. Folk used for solo entertainment.

Form structure
Rondoy is composed of piano rods, piano barrels, pegs, jins, strings and bows.

piano
Most of them are made from locally grown bamboo. The shape is simple and simple, but the specifications and dimensions are very different, with a total length of 60 cm to 80 cm. The qin barrel is 10 cm to 12 cm long and about 8 cm in diameter. The front of the barrel is covered with a panel or snake skin made of bamboo shoot shells, and the rear end of the barrel is open.

piano bar
Made of bamboo, the bamboo knots are cut off, the thicker end of the bamboo pole is the head, and the top is flat without decoration.

peg
There are two shafts at the upper end, the pegs are wooden, conical, and the shaft is 10 cm long.

Thousands of pounds
The middle part of the piano bar is provided with silk strings, and the lower end is inserted into the piano barrel and the strings are exposed.

strings, bows
In the center of the piano surface is a hollow bamboo bridge with two strings, and the bow is made of thin bamboo.

How to play
Play in a seated position, with the left hand holding the qin and pressing the strings, and the right hand holding the bow between the two strings. Fifth setting, the volume is low, because the thin rattan bow is used to rub the thin rattan strings, the pronunciation is rough, the timbre is not as round and plump as the erhu, and the expressiveness is inferior to the Qiming musical instruments of the Li nationality. Folk are often used for solo entertainment.