Beijing malicious engulfed in smoke the second time in two weeks that vision in many areas reduced to less than 100m. The National Meteorological Center warned the level of air pollution in many cities in central and north will increase in the next few days, while the vision continued to decline due to the wind does not appear, Xinhua reported.

Visibility in many areas in the city of Beijing to reduce below 100m due to smog on 29/1. (Photo: Xinhua)

The building in Beijing is in the form of fuzzy shapes in smoke, people wear masks when moving on the streets. Officials recommend that people limit out to minimize the risk of respiratory disease.

The air pollution index in Beijing on 29/1, published by the U.S. Embassy shows that the concentration of dust particles smaller than 2.5 micrometers (PM2, 5) at 526 microgram/m3 - that is more than 20 times higher than the safety threshold of the World Health Organization (WHO).

Dust PM2, 5 is the smallest particulate matter in the atmosphere. They can cause respiratory infections and increased risk of dying of lung cancer and heart disease.

Urban smog covered in the context of hundreds of millions of Chinese people began to move with transport to return home on the occasion of traditional New Year. Dozens of flights were canceled or delayed due to reduced vision in haze. Air China canceled 14 flights to and from Beijing, while the airport Liuting in Qingdao City, Shandong Province has made 20 flights were canceled.