Summing up and down the outward bow whirlpool. The main reason is that the orbicularis oris muscle and the corners of the mouth are out of control or unable to control. The orbicularis oris muscle and buzz angle around the upper and lower extensions exert force naturally and effectively, and the upper and lower lips are naturally attached to the upper and lower teeth. It is possible to control the closure of the two corners of the mouth, thus avoiding its defects.
His cheeks bulged. The main reason is that because the laughing muscles on both sides of the figurative horn are uncontrolled, Qi exists in both cheeks, so both cheeks bulge up. The laughing muscles should be effectively controlled so that the two cheeks are attached to the upper and lower teeth'gums and'the two cheeks lose the condition of gas storage, so as to correct the problem of their drums and cheeks.
If there are too many or too few flutes, the position of flute head is left or right, the neck is tightened, the neck is blushed, the eyebrows and blinks are unnatural defects, they should be corrected by looking at the mirror frequently in practice.