Guo Gangtang shows the message he received from others during the search for his missing son Guo Zhen in Liaocheng, East China’s Shandong province, March 29, 2015. (Photo/CFP)
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Guo Gangtang shows the message he received from others during the search for his missing son Guo Zhen in Liaocheng, East China’s Shandong province, March 29, 2015. (Photo/CFP)