(120808) -- DALIAN, Aug. 8, 2012 (Xinhua) -- Students of police training schools stand in a square team at the opening ceremony of a teaching skill contest in Dalian City, northeast China's Liaoning Province, Aug. 8, 2012. The six-day teaching skills contest for China's police training schools opened here on Wednesday. A total of 476 teachers and students from 34 police schools all across China joined the contest. (Xinhua/Wan Xiang) (lx)
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