Firefighters work to put out a warehouse fire in Foshan, South China's Guangdong province, on July 8, 2013. The fire started about 5:40 am on Monday at a riverside food warehouse, where cooking oil was stockpiled and dozens of people worked inside. The fire spread to a neighboring hardware store and scorched warehouses and nearby trees, burning for more than 10 hours, until 4:00 pm, when it was finally put out. Workers and nearby residents were evacuated, and no casualties were reported. Oil pollutants leaked to the river are not toxic, said local environment authorities. [Photo/CFP]

Smoke billows 20 meters up in the air after a food warehouse caught fire in Foshan, Guangdong province, on July 8, 2013. [Photo/CFP]