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A Chinese Long March-4C rocket carrying the Yaogan-25 remote sensing satellite blasts off from the launch pad at the Jiuquan Satellite Launch Center in Jiuquan, northwest China's Gansu Province, Dec. 11, 2014. It was the 201st mission for the Long March rocket technology. Yaogan satellites are mainly used for scientific experiments, natural resource surveys, crop yield estimates and disaster relief. (Xinhua/Yan Yan)