People study in a room at the Zhejiang Library, a provincial library in Hangzhou, the capital city of East China's Zhejiang province, August 13. Lately, every one of this room's over 300 seats has been filled all day. A heat wave sweeping Hangzhou brought local air temperatures to 40 degree Celsius, prompting people to take advantage of the library's air conditioning. [Photo/Xinhua]
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