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Yu Zhengsheng, chairman of the National Committee of the Chinese People's Political Consultative Conference, visits Baotou Research Institute of Rare Earths in Baotou, north China's Inner Mongolia Autonomous Region, Aug. 10, 2017. A central delegation headed by Yu Zhengsheng spread across Inner Mongolia Autonomous Region on Thursday to visit residents in the northern border region, which is marking its 70th anniversary. Heading one group of the delegation, Yu visited Baotou City. (Xinhua/Yao Dawei)