When playing the flute, don't look for the mouth shape of Shenma, especially the smiling mouth shape of Shenma in some textbooks, which is totally misleading! Lips and mouth must be relaxed, and the flute should be put naturally. Don't press the flute hard with your lower lip. Cover your lower teeth with your tongue and gently press your lower lip. The key is the use of breath. First, abdominal breathing may never be mastered by beginners. After drying your body, tighten your chest with a belt and try to breathe with your abdomen, breathing fast and slow. When you inhale, your throat will feel chilly and you will find the feeling of abdominal breathing. This is the correct breathing of the flute. Second, practice Mr. Marty's "dog panting" technique. In summer, when dogs are very hot, they stick out their tongues and breathe quickly. We can simply imitate "the dog gasps" without using the tongue, and then use this technique to blow out various scales quickly. Third, after mastering the above two points, relax your lips and mouth, the Adam's apple sinks, your shoulders droop, play the flute with gentle breath until you can't feel it, and constantly adjust the direction and oral feeling of the flute. If you can blow out the sound with the softest breath, the pitch is enough, and the introduction of breath is completed.

A tight mouth can never produce a good timbre, and a tight mouth will make a lot of saliva. According to the current flute theory, it is not a big problem to bulge occasionally when playing, on the contrary, it shows that his mouth is not very nervous. Everyone's lips are thin, his teeth are different, and the flute master's mouth is different. Many domestic masters with good timbre have no round timbre at all, and some flute players, including foreign flute masters, have crooked mouths when playing flute. Remember that your mouth must be natural, in line with your habits, not tired, not tight, not tired after playing for a long time, mainly with breath.