The principle is to combine the theory of traditional Chinese medicine, biomechanics and human anatomy, without surgery or operation. As for the problem, I personally haven't tried it first, but many people say it works well, mainly because the plastic surgeon's skills have to pass the test. This is very important. You can search Mr. Xu Qiang, the founder of freehand plastic surgery in China. It seems that every country has its own branch. I hope it helps you. Please accept it. Thank you.