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.
