What is an ancient suspensory score in our traditional notation?

Two-four clef.

The pitch of each step of the scale is represented by two, three, four, five and six, i.e. sol, la, do, re, mi. The higher octaves, sol and la, are recorded as seven and eight. The two-fourths are based on the pentatonic scale, and when they appear in sevenths, the "second change" tones (si, fa) are obtained by raising the original third and sixth (la, mi) tones by a second (a wandering second).

History:

The two-fourths score was first used for the zheng, an instrument that is played and pressed, and later, after the Tang Dynasty, it began to flourish in the Guangdong Province, where it was used for Teochew music and operas. In the Qing Dynasty, various kinds of music flowed into Teochew, and the Ershi sheet music was fused with them. In the 1940s and 1950s, the simplified five-line score began to dominate, but the two-fourths score was still retained in Chaozhou music and Chaozheng folk music.

The two-score is a string poem, and poems should rhyme. Therefore, it is not directly translated and sung to play the sound, this kind of singing can only be called: singing; should be the ancient score and the backbone of the score to pull the accent embellishment into the rhyme that is the Chao's accent sound, which can be called: chanting.

The two-fourth spectrum is a very valuable national music cultural heritage.