You seem to have reading comprehension problems, rhone. Did I say pollution was ok in Hong Kong? Now where in my original post did I say pollution was ok in HK? You see the problem with this forum, people are so thin-skinned, the minute someone disagree with anyone's opinion, well, all hell brake loose. No, I'm saying it's not always that bad. I recalled during the past summer months we had plenty of blue sky and we could see Macau and Zhuhai quite clearly. Pollution is very seasonal due to the winds. In the fall and winter, winds tend to blow from the north or northeast, which brings all the pollutants from the mainland. In the summer, winds tend to blow from the south or southwest, which brings cleaner air from the South China Sea.