Photo taken on Oct. 18, 2018 shows steel producing lines at a steel enterprise in Qian'an, north China's Hebei Proince. China's gross domestic product (GDP) expanded 6.7 percent year on year in the first three quarters of 2018 to about 65.09 trillion yuan (about 9.38 trillion U.S. dollars), data from the National Bureau of Statistics (NBS) showed Friday. (Xinhua/Yang Shiyao)