Wikipedia
Huobosi
The ' Huobosi' (simplified: 火不思; pinyin: Huǒbùsī; ) is a stringed musical instrument from China. The name is a transliteration into Chinese of a Turkmenian name for the instrument.
It has four strings in four courses and is tuned E, A, D, G. Three of the strings are made of silk and the highest is steel.
It was developed through a rationalisation of an earlier Turkmenian instrument of the same name. The models were developed, soprano alto and tenor.