You can also lose weight by cupping. If you have friends who can cupping, you can do it yourself. You can flash cupping around your navel. Of course, if you want to be more technical, you can also go to the Chinese medicine hospital for cupping.
If you go to a Chinese medicine hospital, you can also ask the doctor to prescribe some Chinese medicine to lose weight, preferably the kind that you can drink like tea when you come back. There is really no need to decoct medicine or anything.