Dapu 〔打譜〕 is the conversion of old tablature into a playable form. This can be used to create new music as well as to reconstruct the ancient melodies. Since qin tablature does not indicate note value, tempo or rhythm, the player must work it out for him/herself. Normally, qin players will learn the rhythm of a piece through a teacher. They sit facing one another, with the student copying the master. The tablature will only be looked at if the teacher is not sure of how to play a certain part. Because of this, traditional qinpu do not indicate them. If one did not have a teacher, then one had to work out the rhythm by themselves. But it would be a mistake to say that qin music has no rhythm or melody. 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. Because qin tablature is so useful, logical, easy, and the fastest way (once the performer knows how to read the notation) of learning a piece, it is invaluable to the qin player and cannot totally be replaced. There are two views of how to best use dapu: one is to use it to create new music, and the other is to use it to reconstruct the way the original music was played.