South Korean plastic surgeons are very good. So, many people from China and Japan go to South Korea for plastic surgery. The surgery is so good that some people can't go home. They show their passport to customs people at the airport. But the customs people think the picture in the passport is a different person, because the surgery is so good. Now, some hospitals give a special paper to people after surgery. It says that the person got plastic surgery, so the customs people know it's not a different person.