琴的第一徽到十三徽,与全弦的比例依次为:1/8、1/6、1/5、1/4、1/3……7/8,蕴涵精确的数理关系。十三个徽位的确定,琴工作依照他们世代相传的“摺纸法”确定徽位,其精确度超过计算,因为全弦的长度用任何时代的尺度测量,都可能是一个近似值;再 The first to the thirteen emblem of the piano, and the proportion of the full scale followed by: 1 / 8,1 / 6,1 / 5,1 / 4,1 / 3 ...... 7/8, implies a precise mathematical relationship. The determination of the thirteen emblems, the work of the pianos, is determined according to the “origami method” handed down from generation to generation, with more precision than the calculation because the length of the whole string, measured on any scale of the times, may be an approximation;