我国的民族乐器二胡,发音灵敏,音色丰满和润,业已成为民乐队中主要的拉弦乐器。但是,二胡也有其不足的方面,如音域不够宽,下把位易出现狼音等。为此,不少有识之士对其进行了不断的改革探索,先后研制了扁圆筒二胡、三胡及四根弦的华胡等,但总还不够理想。最近,一种取各种民族弦乐器之长的古 China’s national musical instrument erhu, sensitive pronunciation, full tone and run, has become the band’s main stringed instruments. However, Erhu also has its shortcomings, such as the range is not wide enough, the next prone to wolf sound and so on. To this end, many people of insight carried out constant reform and exploration. They have successively developed flat cylinder erhu, trio and four strings Hu Hua, etc., but the total is still not quite satisfactory. Recently, a long ancient instrument of various ethnic stringed instruments