I don't understand the first question, but I know the second question, which is a little developed now. There are three kinds, namely, thread embedding method, minimally invasive method and Korean incision method. In principle, the first one has a short life span, which can be used for more than ten years, while the latter two have a long life span and no knife edge, but the price is relatively expensive. In general, the embedding cap of large hospitals is 1000 ~ 2000, and minimally invasive is similar to incision. My eyelids were buried in a small shop in 2002. Only 400. Ten years later, it is still very good, except that the skin is a little loose and the corner of the eye outside the right eye is a little protruding, which is not obvious. There is no need to make them too expensive. It makes no difference at all. Of course, double eyelids depend on my skin, and the effect is different. I hope my experience can help you.