To string a qin , one traditionally had to tie a fly 's head knot ( `` yingtou jie '' ) at one end of the string , and slip the string through the twisted cord ( `` rongkou '' ) which goes into holes at the head of the qin and then out the bottom through the tuning pegs ( `` zhen '' ) .
To string a qin , one traditionally had to tie a butterfly knot ( `` shengtou jie '' 蠅頭結 ) at one end of the string , and slip the string through the twisted cord ( `` rongkou '' 絨剅 ) which goes into holes at the head of the qin and then out the bottom through the tuning pegs ( `` zhen '' 軫 ) .