When you make a sound, your breath moves up. When exhaling, the steps of transmitting breath are: the strength of the upper abdomen pushes the breath to the chest, and then exhales from the chest. That is, using the feeling of lifting the upper abdomen to bring air up. Feel the chest, ribs and upper abdomen work together to help promote breathing.

In order to make the breath exhale slowly and forcefully, the principle is that the inhaled breath should be controlled in an instant, and then immediately transformed into the exhaled state.

Hold the chest, ribs and upper abdomen gently, and don't let all the air just inhaled be discharged immediately, so as to achieve a natural and elastic breathing control state. In fact, this is the beginning of control. You should consciously control the inspiratory muscles that are already contracting.

Extended data:

When practicing the ability to control exhalation, we should pay attention to the following principles:

Exhaled breath comes from the control part of the chest and abdomen. Even if you feel your breath is running out, don't lose control. With a sense of control, you will feel that every sentence or every sound will be supported by breath, and the sound will present a round and natural state.

The intensity of controlling breathing should be moderate, the controlled part should be as elastic as a ball and feel relaxed and comfortable. If you control too much and maintain too much strength, you will hold your breath. When your breathing is tense, your voice will become stiff, and your breathing can't breathe out smoothly.

References:

Baidu Encyclopedia-Chest and Abdominal Breathing