(250325) -- JINAN, March 25, 2025 (Xinhua) -- This file photo shows the drilling site of the Jiyang shale oil national demonstration zone in east China's Shandong Province. The China Petrochemical Corporation (Sinopec Group), the country's largest oil refiner, has announced the discovery of more than 140 million tonnes of proven shale oil reserve in east China's Shandong Province.

TO GO WITH "China discovers large shale oil reserve in major oilfield" (Xinhua)