A woman wearing summer clothing walks past an advertisement board with the Chinese character meaning "summer" in Zhengzhou, capital of central China's Henan Province, May 5, 2013. Sunday is the beginning of the 7th solar term in Chinese lunar calendar, which indicates the coming of summer. The temperature in Henan rebounded in recent days. [Xinhua]

People with sunhats are seen riding in Zhengzhou, capital of central China's Henan Province, May 5, 2013. Sunday is the beginning of the 7th solar term in Chinese lunar calendar, which indicates the coming of summer. The temperature in Henan rebounded in recent days. [Xinhua]

Women wearing summer clothing walk on the square of the railway station in Zhengzhou, capital of central China's Henan Province, May 5, 2013. Sunday is the beginning of the 7th solar term in Chinese lunar calendar, which indicates the coming of summer. The temperature in Henan rebounded in recent days. [Xinhua]

Young people wearing summer clothing walk past an advertisement board in Zhengzhou, capital of central China's Henan Province, May 5, 2013. Sunday is the beginning of the 7th solar term in Chinese lunar calendar, which indicates the coming of summer. The temperature in Henan rebounded in recent days. [Xinhua]

A woman walks along the lake bank of the Nanhu Park in Changchun, capital of northeast China's Jilin Province, May 5, 2013. Sunday is the beginning of the 7th solar term in Chinese lunar calendar, which indicates the coming of summer. The temperature in Jilin rebounded in recent days. [Xinhua]