File photo taken on Sept. 2, 1991 shows Qin Chongjing, a grade-fourth pupil, smiling as getting textbook on the school opening day at Ciyun Primary School in Hefei, capital of east China's Anhui Province. (Photo/Xinhua)
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File photo taken on Sept. 2, 1991 shows Qin Chongjing, a grade-fourth pupil, smiling as getting textbook on the school opening day at Ciyun Primary School in Hefei, capital of east China's Anhui Province. (Photo/Xinhua)
