In the performance of Hulusi and Bawu, portamento plays a major role in the transition of tone and tone. It is indispensable to achieve a round, beautiful, smooth and rich national style, especially the application of portamento in the performance of Dai style music.

Portamento can be divided into portamento and portamento. First of all, we will explain the performance of the portamento. The portamento is marked with an inverse parabola. The portamento slides from the bass to the high pitch. The method of playing is to move the finger from the bass to the high pitch. We only need one sentence to play the slide up. For the swipe to lift, the effect of the portamento appears naturally.

The glissando is opposite to the upward glide. From the point of view of the symbol, it is identified by a positive parabola. From the point of view of performance, it slides from the treble to the bass. The method of playing is that the fingers are gradually closed from the treble hole to the bass hole, that is, by directly closing It becomes gradually closed, and the glissando appears naturally.

Hulusi and Bawu are embellished with ascending and descending notes, which make the performance of the music more charming and distinctive. From a microscopic point of view, in the performance of Adagio, almost every note adopts the technique of portamento, the difference lies in the length of time it takes. In the teaching, I emphasized the feeling when the finger touches the sound hole, which is particularly important. It is an important factor in determining whether the music is beautiful or not.

The more difficult part of the portamento is the portamento that exceeds the fourth range, which requires close coordination of the fingers and requires a higher level of coordination and requires more practice.