China ends smog warning

China's national observatory on Sunday lifted a yellow warning for smog, as cold air will disperse lingering smog in north China in the next few days.

The National Meteorological Center said a cold front will gradually reduce the smog in north China in the next three days, but some areas will still be shrouded by light to moderate smog before Monday.

As a result, the center decided to put an end to the yellow warnings for both fog and smog.

China has a four-tier weather warning system, with red representing the most severe weather, followed by orange, yellow and blue.

In the past week, heavy smog lingered in most parts of north China, including Beijing and Tianjin municipalities and Hebei Province. Endi