People attend the celebration ceremony at the site of coal-to-liquid (CTL) project in northwest China's Ningxia Hui Autonomous Region, Dec. 28, 2016. The world's biggest single coal-to-liquid (CTL) project went into production Wednesday in Ningxia. The project, undertaken by a subsidiary of the state-owned Shenhua Group, consists of homegrown technology, equipment and materials, breaking the longtime foreign monopoly in CTL core technology. (Xinhua/Li Ran)
