I have done it in Qingdao Shanda Hospital, and the effect is not bad. I did it in junior high school, about 8 or 9 years ago. The price seems to be 23,000 yuan, but school insurance is partially covered. My nasal polyp at that time had compressed the ear nerve, which was more serious. Yantai, you can call for advice and suggest going to Qingdao. I hope it helps you!