I've already done it and cut it. My personal experience is that I must go to famous hospitals, such as Shanghai No.9 Hospital and Beijing No.8 Hospital. The rest is not bad, just an opportunity. If you have better conditions, all provincial hospitals can do it. If the conditions are not good, don't be angry about money. I didn't do well. All the above are from the heart. (Bad conditions: short eyes, need to open the corners of the eyes, etc. ) Baidu has a post bar, you can find it by typing double eyelids. There are many like-minded people in it, asking more questions and being particularly impulsive. Go as soon as you hear it, and spend more time doing your homework. Good luck!