Photo taken on Sept. 19, 2010 shows farmers winnowing the chaff off grain at Farm 856 in northeast China's Heilongjiang Province. China's National Bureau of Statistics (NBS) announced on Dec. 3 that the country's grain output rose 2.9 percent year on year in 2010 to 546.41 million tonnes. This marked the seventh consecutive year of growth for China's grain output. [Xinhua]