The huqin are a family of bowed instruments, whose direct precursor instrument is the xiqin. The erhu being one of the more noticeable instruments of this family. usually consist of a hexagonal or sometimes a circular resonance chamber that is almost always covered with snake skin, most often [python] as a membrane or thin wood, such as the banhu or yehu. The neck of the instrument protrudes vertically straight from bottom of the resonator through the top of the resonator. Thus completing the basic form of the instrument.
Typically huqin instruments usually have two tuning pegs, one peg for each string. The pegs are attached horizontally through holes drilled in the instrument’s neck on either left and right side. Most huqin have the bow hair pass in between the strings. Exceptions to having two strings and pegs include variations of huqin with three, four and sometimes even more than five. These include the zhuihu, a three stringed huqin, the sihu, a huqin of Mongolian origin and the sanhu a rare three string huqin.