Over 4,000 fire fighters are battling a huge forest fire in north China with 2,000 more on their way. Local authorities said the fire was spotted yesterday afternoon in Greater Hinggan Mountains in Inner Mongolia Autonomous Region, and spread to neighboring Heilongjiang Province about two hours later. The fire is still raging. Deputy Chief of Heilongjiang Forestry Department has said the area has had little rain and the temperatures have been higher than usual.<br/><br/>