Hwangsa - 황사

Hwangsa - 황사 , is this yellow sand storm from China that cause fog like weather in Korea. It is today that I first experience it, and even I don't even know what hwangsa means before. Today morning the weather looks great, its kinda cold but its great with the bright sun. But at about 3 o'clock this morning it turns out that it is a bit cloudy, i guess. But there's this horrible scent that feels like dust blocking your nose. And it actualy do dust which is hovering over the air. When i looked at the window, the area was like surrounded by fog, but it is more dangerous than fog, cause its dusts. I think I need to stay more indoor this time, thanks God it didn't happen yesterday or else the Spring Festival will be ruin.