Smog disrupts Spring Festival rush   

雾霭再袭中国中东部 多地春运交通受阻

北京28日晨再遭雾霾迷城，气象台发布大雾和霾黄色预警，一些地区道路能见度不足200米，这是新年以来北京第四次遭遇雾霾，受其影响，北京空气质量再度降至严重污染级别。

Beijing (CNS) -- Persistent smog in central and eastern China is disrupting the Spring Festival travel rush in the region.

A number of highways have been closed in central China's Henan province and 372 flights have been delayed at Zhengzhou Airport.

Low visibility caused the closure of the Qingdao Liuting Airport in Shandong Province on Tuesday morning, reports said. Some of the area's highways have also been closed because of heavy fog.

China's national meteorological authorities issued a blue alert for heavy fog in the central and eastern parts of the country on Sunday.

The fog will persist in the region until Wednesday, the authorities said.