The phenomenon of fog in recent days has made it difficult for daily life in East China.
Fog in China. (Photo newshopper)
In many cities, visibility is limited. China Central Meteorological Station continuously issued warnings to remind people to ensure safety when participating in traffic.
The agency has also issued a " green warning " to the Liaoning, Chinese North, Hoang Hoai, Giang Hoai, Giang Nam, Southwest, and Yunnan areas, where the sight drops below 1,000. m.
Meanwhile, the Chinese Civil Aviation Administration said from early morning on December 1, air operations at airports such as Tianjin, Hongqiao, Pudong, Qingdao, Jinan, Yantai, Dalian, Hangzhou . were affected, with a total of more than 300 flights delayed.
Previously, Chinese weather forecasters had reported that November and December were the most likely foggy periods of the year in the country.
Due to serious air pollution, the Iranian government decided to close government agencies, schools and factories in two days 1-2 December, claiming it was two peoples' holidays.
This is the second time in just one month, the government agencies have to suspend operations because of air pollution.
Traffic activities are also restricted. Health experts have warned about the growing number of Iranian people suffering from diseases related to air pollution.