A worker checks a production line of dairy products at a company in Pingyang County of Wenzhou City, east China's Zhejiang Province, June 22, 2017. China's gross domestic product expanded 6.9 percent year on year in the first half of the year to about 38.15 trillion yuan (5.62 trillion U.S. dollars), data from the National Bureau of Statistics (NBS) showed Monday. (Xinhua/Xu Yu)