   neutral   But I heard the north of China are experiencing severe sandstorms!     surprise   Really?  
    neutral   Yes, it's said that Hebes was experiencing six degree strong winds.     neutral   How do these storms affect the people who live in these areas?  
    neutral   The report said the number of people with respiratory tract infections tended to rise after sandstorms. The sand gets into people's noses and throats and creates irritation.     neutral   
 Can you say something about why we experience more and more of them every year? 
 Have any trees been planted on any of those open desert land?    Of course!