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A doctor introduces ear care knowledge to children at a kindergarten in Donghai County in Lianyungang, east China's Jiangsu Province, March 1, 2019. China's national Ear Care Day falls on March 3. (Xinhua/Zhang Kaihu)
A doctor introduces ear care knowledge to children at a kindergarten in Donghai County in Lianyungang, east China's Jiangsu Province, March 1, 2019. China's national Ear Care Day falls on March 3. (Xinhua/Zhang Kaihu)