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As metropolitan area and urban cluster are gradually becoming the mainstream of urban development, fighting alone no longer works. From “four brothers” – Hangzhou, Huzhou, Jiaxing and Shaoxing – to “big family”, consisting of 41 cities in the Yangtze River Delta, Hangzhou is keeping expanding its “Moments” by promoting the depth and breadth of regional cooperation. The trend will well continue and Hangzhou’s journey of international metropolitan area has just started.