Beijing shut down 13 expressways on Wednesday due to heavy fog in Beijing and surrounding regions, according to transportation authorities.
The Beijing-Tianjin-Hebei region and parts in North China's Shanxi Province and Northwest China’s Shaanxi province are seeing heavy air pollution since Tuesday.
Beijing shut down 13 expressways on Wednesday due to heavy fog in Beijing and surrounding regions, according to transportation authorities.
The Beijing-Tianjin-Hebei region and parts in North China's Shanxi Province and Northwest China's Shaanxi Province are seeing heavy air pollution since Tuesday.
Winter heating and vehicle emissions combined with continuous south wind and high humidity intensified the secondary transformation of gaseous pollutants such as NOx and SO2, and raised the concentration of PM2.5, according to a notice issued by the Ministry of Ecology and Environment.
