I went to the hospital. because I had a sorethoroat and kept  runny nose.  because of  the yellow sand. I couldn’t breath outdoor. it is getting worse and  worse. so  i  was in door yesterday. when i go out from now ,i  have to take mask. i had better escape  the place where people crowded. and  drink  water  at least 7times a day. and my eyes tickle. i am sure that yellow sand never comes again. I know it is impossible. but Are there any method not to shut out the yellow sand from china?