How to avoid the strange “tail” of spitting sound
Every beginner almost has the same experience that when you toot the spitting sound, there is a strange sound (sounds like “wool” or “go”) followed the spitting sound. It’s abnormal in playing the hulusi.
How to avoid the abnormal sound? There are some advice for you below.
1.Keep the air flow stable, that is to say, every sound should be strong equally.
2.At the end of one sound, open your mouth quickly to breathe the redundant air out, or close the blowing pipe quickly with your tongue tip.
3.Pay attention to the cooperation between finger and mouth.
It is said easier than done. To practice more and more is the only good way.
If you have any question, you can post it on this BBS. Believe that there will have many fans to help you in English, say nothing of Chinese. 
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