July 11 is the “World Population Day.” A Chinese population official aid that China now faces six major problems in optimizing population structure. These problems are: 1, Serious gender imbalance in newborns; 2, Population with born defects remains high; 3, Population aging; 4,Social problems caused by population migration, such as children left behind in rural areas by migrant workers; 5, Education of children of migrant population; and 6, Serious impact on population security by infectious diseases such as AIDS.
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