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Photo taken on April 22, 2019 shows a farmer checking the cotton fields after the seeds were sown by an unmanned seeder equipped with Beidou navigation satellite system in northwest China's Xinjiang Uygur Autonomous Region. The mechanization rate of Xinjiang's farm work including ploughing, planting and harvesting sectors reached 84.68 percent in 2018. (Xinhua/Wang Fei)
