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A teacher introduces ear care knowledge to students at a primary school in Shijiazhuang, north China's Hebei Province, March 1, 2019. China's national Ear Care Day falls on March 3. (Xinhua/Liang Zidong)
Ear care knowledge introduced to students across China
Source: Xinhua| 2019-03-01 20:30:48|Editor: Li Xia
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