I don't know how to answer you. Is it expensive? I have always thought that meeting my requirements is not expensive. Of course, we should feel cost-effective and achieve our goals. But after all, in Beijing, the consumption level will be a little more expensive than other cities, but it is still acceptable. If the doctor says so, Li can do it. Doctors are good, and hospitals have a history of more than ten years. I'm going to visit in a few days.