A young woman wearing summer suit walks on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

Young women wearing summer suits walk on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

A young woman wearing summer suit walks on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

A young woman wearing summer suit rides on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

Young women wearing summer suit walk on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

A young woman wearing summer suit walks on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

A young woman wearing summer suit walks on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

A young woman wearing summer suit walks on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

A young woman wearing summer suit walks on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)

A young woman wearing summer suit walks on road in Nantong City, East China's Jiangsu Province, May 21, 2013. The highest temperature reached 31.9 C on Tuesday. (Xinhua/Xu Peiqin)