ZHENGZHOU, July 15, 2016 (Xinhua) -- Photo taken on June 14, 2016 shows the workshop of a steel company in Linzhou, central China's Henan Province. China's gross domestic product (GDP) expanded 6.7 percent year on year in the second quarter of 2016, stable from the first quarter, the National Bureau of Statistics said on Friday. (Xinhua/Feng Dapeng)