Beijing on December 25 05, according to the national meteorological center website 24 to 25, 05 PM, central and southern north China, west of huanghuai in mild to moderate haze, the regional PM2.5 concentration daily average concentration of more than 75 micrograms per cubic meter, central and southern hebei southern, northern shanxi, Beijing and other parts of more than 115 micrograms per cubic meter, local more than 150 micrograms per cubic meter. 25, central and southern north China, yellow...