Besides the large number of note positions, the fingering methods are copious--with no less than 100 types. "There was one fingering method, I spent a year before really grasping its subtlety," recalls Sun.
除了發音位置多，指法也多得不下百種，「曾有一個指法，我花了一年工夫才領略其中奧妙」，孫毓芹回憶。