China News Service, March 14. The Central Meteorological Observatory continued to issue a yellow fog warning at 6:00 on March 14: It is expected that from the morning to the morning of the 14th, there will be heavy fog in western and southeastern Shandong, northeastern Anhui, most of Jiangsu, northern Shanghai and other places. There are heavy fogs in some areas, among which there are thick fogs with visibility lower than 500 meters in parts of western and southeastern Shandong, Jiangsu and other places, and strong dense fogs with visibility lower than 200 meters locally.