The Central Meteorological Observatory continues to issue a yellow warning for heavy fog at 06:00 on December 18th.

It is expected that from the night of December 17 to the morning of December 18, there will be dense fog in some areas of southern Hebei, southeastern Beijing, northern Tianjin, southeastern Henan, central-northern Anhui, central-western Jiangsu, northern Hubei, central-southern Sichuan Basin, and central-western Chongqing. Among them, there will be areas with visibility less than 500 meters of dense fog in central Hebei, southern Henan, central-southern Jiangsu, central-southern Sichuan Basin, and western Chongqing, and some areas of central Hebei, southern Henan, central-southern Sichuan Basin, and western Chongqing will have strong dense fog with visibility less than 200 meters.