The voice of young boys belongs to the period of voice change, usually like the voice of a duck, very low and heavy. Even when boys grow up, their voices are lower than those of girls. Fang Datong is not a tenor. He still has to drop his voice when singing girls' songs, otherwise he can't sing with a real voice. It seems that tenor Hins Cheung is very tall, but it is natural. Singers in the grasslands and plateaus usually shout at the mountains every day. They have been practicing since childhood. One recommended method is to practice "ah ~" every morning and gradually improve your tone. In order to moisten the lungs, many stars drink Sydney water.