WHEN the day's work is over around 6 p.m., many factory and office workers in the north China's metropolis of Tianjin do not go home but instead attend classes. One place they go to is Workers'...
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WHEN the day's work is over around 6 p.m., many factory and office workers in the north China's metropolis of Tianjin do not go home but instead attend classes. One place they go to is Workers'...