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Combo photos tell China's development in past 70 years

Xinhua | Updated: 2019-09-22 07:26
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Top: File photo taken in 1965 shows oil workers taking out a long rock core for the first time in Daqing, Northeast China's Heilongjiang province. Bottom: Photo taken on June 26, 2019 by Wang Jianwei shows Jiang Hongwei of No 1202 drilling team introducing an advanced drill in use at Daqing Oilfield. Nowadays, workers can realize fast and efficient operation in drilling control rooms with the upgrade of mechanization and automation level. [Photo/Xinhua]
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