In China maybe there is a lot of pollution as you describe it in your publication, but it is a beautiful country, I have not had the pleasure of going but I have seen through the lenses of other people that it is a wonderful place, here in my Venezuela there is contamination , maybe not in a point like that, but if there are, to decongest some nostrils, we use a steam bath, it is a very simple and quick method to place your face high over a pot or steamer with boiled water and a little of menthol and with a towel on your head, you do all the steam with your eyes closed, that will help you decongest and clean your nostrils.