Kangmeidan, spring in the deep valley

There is no product specifically for navel sticking. You can directly paste the "pure" Kangmeidan on your navel, and it is best not to use wind cream. But we must keep its temperature and humidity at the same time. It is generally not easy to maintain humidity. I'll teach you a trick. After you stick Kangmeidan, stick it on Kangmeidan with alcohol cotton (it can last for about 2 days), and then seal it with that kind of wide tape. You must not give a chance to enter politely, or you will not insist. Good luck.