i dunno about sports supplements, anyway you can dont take them there, then when you book out 1 month later, or during chinese new year, then book in with the health supplements.

I think you may be allowed to bring biscuits etc. NOT SURE though. And i believe, the first time you go to BMTC, all will kenna have to take out everything you have at the basketball field or parade square, for spot check.
Better dun bring no-use things, less you get black listed.
>7 underwears is good. All up to you, because if it rains everyday for 3-4 days in a row, then your hand-washed or laundry underwears or clothes never dry, then you will kenna.
