Executant have to breath the air nonstop for keep the music continuously, but human vital capacity is limited, and for keep the nonstop music , the air should be inspire to the lung when you play.

• 要使乐音连绵不断地持续下去，吹奏者必须把气流源源不断地吹到吹嘴内，但由于人的肺活量是，要用这少量的气使乐音持续很长的时间，一定要在吹奏的同时把气吸入肺内。