 Some people argue that the old system is just as accurate as the new system when qin tuning theory is observed.Also, these old positions may actually conform to the rules of equally tempered music, with its pitches slightly flatter, such as in the case of 8 for 7.9 and 11 for 10.8.Another main property for this old system is that it requires the player to "feel for the note", just as one would do for any other fretless stringed instrument, be it erhu or violin, instead of relying solely on fixed positions (which pitches can change slightly depending on how the player tunes their qin).