1) Korean musical instrument 
The sohaegeum (hangul: 소해금; hanja: 四奚琴) is a North Korean musical instrument, developed in the 1960s. It is essentially a modernized form of the haegeum (a traditional Korean bowed vertical fiddle). So (hanja: 四) in sohaeheum means `four,` because it has four strings. Its tuning pegs are like those of the violin, inserted from the .....