Chinese Deputy Finance Minister Zhu Guangyao addresses financial officials and bankers from more than 40 countries just ahead of the first Ministerial Meeting of the Turkish G20 Presidency in Istanbul, Turkey on Feb. 8, 2015. The global economy faces big and crucial challenges with uncertainty and complexity in 2015, Zhu Guangyao said in the international financial meeting here on Sunday. (Xinhua/Lu Zhe)
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