I suggest you go to a hospital instead of a beauty salon. The technique of bloodletting is still strict in hospital sterilization, so it is best to go to those large plastic surgery hospitals. Double eyelids are very small operations, and major operations are all done by plastic surgery hospitals, so if they are not done well, or there is no swelling, they will take the initiative to deal with you in order to avoid some small things affecting your reputation. You can also go to the beauty department of a state-owned hospital or something. Now some hospitals also offer these programs.