Delegates attend the International Conference on "Culture: Key to Sustainable Development" in Hangzhou, capital of east China's Zhejiang Province, May 15, 2013. The three-day conference kicked off here on Wednesday. (Xinhua/Xu Yu) 

Delegates attend the opening ceremony of the International Conference on "Culture: Key to Sustainable Development" in Hangzhou, capital of east China's Zhejiang Province, May 15, 2013. The three-day conference kicked off here on Wednesday. (Xinhua/Xu Yu)

Delegates attend the International Conference on "Culture: Key to Sustainable Development" in Hangzhou, capital of east China's Zhejiang Province, May 15, 2013. The three-day conference kicked off here on Wednesday. (Xinhua/Wang Dingchang) 

Irina Bokova, director-general of the United Nations Educational, Scientific and Cultural Organization (UNESCO), addresses the opening ceremony of the International Conference on "Culture: Key to Sustainable Development" in Hangzhou, capital of East China's Zhejiang Province, May 15, 2013. The three-day conference kicked off here on Wednesday. (Xinhua/Xu Yu) 

Delegates attend the International Conference on "Culture: Key to Sustainable Development" in Hangzhou, capital of East China's Zhejiang Province, May 15, 2013. The three-day conference kicked off here on Wednesday. (Xinhua/Xu Yu) 

Chinese Vice Minister of Culture Zhao Shaohua addresses the opening ceremony of the International Conference on "Culture: Key to Sustainable Development" in Hangzhou, capital of East China's Zhejiang Province, May 15, 2013. The three-day conference kicked off here on Wednesday. (Xinhua/Xu Yu)