It must be false to say that double eyelid surgery doesn't hurt. Even if a small thorn sticks in, there will be a slight tingling sensation, but double eyelid surgery is definitely under local anesthesia, which means there will be a slight pain, just like the feeling of acupuncture. Of course, playing anesthetic is also a technical activity, and you have to go to a regular hospital! I suggest you go to Nanjing Phoenix Island Plastic Surgery Hospital, which is very famous in Nanjing. You might as well Baidu.