Plastic surgery hospitals often have some such preferential activities, which are not arbitrary charges. As long as you keep an eye on the prices of these plastic surgery projects, you will compare them. Is it really a discount? It's like when you go shopping in the mall and see some clothes you like very much, but they are too expensive, so you don't buy them, but wait until there are preferential activities in the mall. When I bought it again, I found that the mall was just a discount or something. Will you buy it again? These two are the same thing. The ultimate goal is to attract some consumers in need to spend.