Practicing the sound of the sea can beautify the sound and expand the range. Especially the cultivation of * * * Ming is very important. In fact, users with good voice use only 1/5 of the total energy, and 4/5 of the energy is used to control the shape and movement of the vocal organs. In the process of producing * * * sound, the organ of * * * sound retouchs the original sound from the vocal cords to make the sound round and beautiful. Scientific adjustment of vocal organs can enrich or change the color of sound, protect vocal cords and prolong life.