will have the exam soon, anybody can answer my question?

dhxy

I will have the exam on 25th in Shanghai, anybody know what the proper dress is? I mean whether the air-con in the exam centre is very strong or weak? what should i wear? remaining time is really limited. I have no any time to visit the centre in advance, so will it be a problem for me? I mean if I can find the the centre quickly on 25th morning? Thanks all so much!