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Aged people exercise at an aged-care center in Beijing, capital of China, Feb. 15, 2018. Activities were held here for the aged to celebrate the Spring Festival. (Xinhua/Luo Xiaoguang)

Aged people exercise at an aged-care center in Beijing, capital of China, Feb. 15, 2018. Activities were held here for the aged to celebrate the Spring Festival. (Xinhua/Luo Xiaoguang)