You need to find a regular plastic surgery hospital to do double eyelids. Double eyelid is one of the operations with high failure rate, especially suture and needle sewing. If you are in Shanghai, you can recommend a patent-free double eyelid project. The patent scalpel in Hua Fu Hospital is very thin, but the fat is still clean, so the incision is very thin, no suture is needed, and it will recover within 3 days without swelling. Its technology is extended from the Korean double eyelid, but because it is multi-point, it is better than the Korean three-point one. Specific things can be consulted by doctors on their hospital website.