What is "daguangxian"

The daguangxian (; literally "great, broad string [instrument]") is a Chinese bowed two-stringed musical instrument in the huqin family of instruments, held on the lap and played upright. It is used primarily in Taiwan and Fujian, among the Hakka and Min Nan peoples.

It is also referred to as datongxian (大筒弦), guangxian (广弦), and daguanxian (大管弦).