Dense fog stages a comeback to Beijing (22)

A photo taken on Jan. 13 shows the National Stadium, or the Bird's Nest under grey sky. Beijing's meteorological center on Monday issued a yellow-coded alert for haze as the fourth foggy weather in this month hit the city and cuts the visibility below 3,000 meters in major parts of Beijing. Beijing's meteorological center on Monday issued a yellow-coded alert for haze as the fourth foggy weather in this month hit the city and cuts the visibility below 3,000 meters in major parts of Beijing. (Photo/Xinhua)