Now that technology is so advanced, everything can be solved by plastic surgery, but the method is slightly different, hehe. It seems that if the forehead collapses, you can put a suitable prosthesis on your forehead or use your own fat transplantation method, and the operation time will not be long. You can go to the Golden Plastic Surgery Center of Panjiayuan Guangxi Building for consultation, which shows that the hospital technology is quite advanced and the doctors seem to have rich experience.