中国的古筝 Chinese Zheng,Zheng,GuZheng,KuCheng,zithersZheng (Guzheng) is build with a special wooden sound body with strings arched across movable bridges along the length of the instrument for the purpose of tuning. In the early times the zheng had 5 string; later on developed into 12 to 13 strings in the Tang Dynasty (618 - 907AD) and 16 strings in the Song and Ming dynasty (from the 10th to 15th century). The present day zheng usually has 21-25 strings.日本古筝(十三弦),koto