Numbered musical notation and so on. Dashes after a note lengthen it, each dash by the length of a quarter note. A dot after the plain or underlined note works increases its length by half, and two dots by three quarters. The underline, along with its joining, are analogous to the number of flags and beaming in standard notation. So are dotted notes. But the analogue stops at notes worth three quarter notes and beyond, where dashes are used instead. The number "0" represents the musical rest. The rules for length is similar to that of the note, except that it is customary
Gongche notation beat in every two notes, i.e. two notes are sung or played to each beat. These notes in solfege with markings will show a similar effect: Using this method, only the number of notes within a beat can be specified. The actual length of each note is up to tradition and the interpretation of the artist. Notice that the actual rhythm marks used differ among various traditions. "Gongche" notation was invented in the Tang Dynasty. It became popular in the Song Dynasty. It is believed to have begun as a tablature of certain musical instrument, possibly using a fixed "do"