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A pupil shows a hanger she designed for people on trips during a youth science and technology innovation competition in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, March 23, 2018. (Xinhua/Zhang Ailin)
A pupil shows a hanger she designed for people on trips during a youth science and technology innovation competition in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, March 23, 2018. (Xinhua/Zhang Ailin)