By the 20th century , there had been attempts to try to replace the shorthand notation , but so far , it has been unsuccessful ; since the 20th century , qin music is generally printed with staff notation above the qin tablature . By the 20th century , there had been attempts to try to replace the `` jianzi pu '' notation , but so far , it has been unsuccessful ; since the 20th century , qin music is generally printed with staff notation above the qin tablature .