Drinking Pu 'er tea at ordinary times helps to clean up excess fat in the stomach and decompose fat. But this is only an aid, and it takes a long time to drink scientifically and reasonably to have a certain effect. Don't think that you can effectively lose weight and fat by drinking any tea. This is definitely a propaganda method for tea merchants. Tea is not medicine, so it is impossible to lose weight quickly.
I suggest you eat a reasonable diet, drink tea in moderation, and mainly exercise, which is really useful.