A fire barrier has been set up along the north China border to prevent grassland fires from further crossing into China from Mongolia.
Several wildfires rage through forests and grasslands in north China's Inner Mongolia Autonomous Region on April 21, 2012. [Xinhua]
Nearly 1,600 firefighters have been deployed in several areas along the border to battle fires that spread across the border last Friday.
Strong winds are hampering firefighting efforts, the headquarters said.