A child reads at a book store in Harbin, capital of northeast China's Heilongjiang Province, Aug. 4, 2007. Some children go to the cool book stores for reading in the hot summer holidays. (Xinhua Photo)

A child reads at a book store in Harbin, capital of northeast China's Heilongjiang Province, Aug. 4, 2007. Some children go to the cool book stores for reading in the hot summer holidays. (Xinhua Photo)

A child reads at a book store in Harbin, capital of northeast China's Heilongjiang Province, Aug. 4, 2007. Some children go to the cool book stores for reading in the hot summer holidays. (Xinhua Photo)

A child reads at a book store in Harbin, capital of northeast China's Heilongjiang Province, Aug. 4, 2007. Some children go to the cool book stores for reading in the hot summer holidays. (Xinhua Photo)