I am leaving to Huangshan on 27 August 2014, can anyone advice me what to bring?

According to the latest weather forecast, it would be a little bit cool on Aug. 27 and a couple of days afterwards, with the temp range of 15-20℃. And on Aug. 27, 29 and 30, there will be light rainfall. Considering all, I suggest you prepare long-sleeved shirt, jackets and pants as well as simple rainy gear. If you are really afraid of cold, bring Long Johns as well.