Workers advance exploration of shale oilfield to ensure energy production and supply in Daqing

This aerial photo taken on Jan. 4, 2024 shows a demonstration zone of a major shale oilfield at Daqing Oilfield in Daqing, northeast China's Heilongjiang Province. Workers of Daqing Oilfield have been working amid severe cold as they advance the exploration of the shale oilfield to ensure energy production and supply. (Xinhua/Zhang Tao)