Staff members applaud at the inauguration ceremony of the Changling-Yongqing section of the China-Russia east-route natural gas pipeline at the Yongqing compressor station in Yongqing County, north China's Hebei Province, Dec. 3, 2020. The China-Russia east-route natural gas pipeline's Changling-Yongqing section, linking Changling of northeast China's Jilin Province and Yongqing of north China's Hebei province, went into operation on Thursday. (Xinhua)
