Integration of the Yangtze River delta for high-quality development 并列题名：Integration of the Yangtze River delta for high-quality development Research on the path to achieve integration of the Yangtze River Delta for higher-quality development cross the threshold of high-quality development Cross the threshold of high-quality development an effective pathway for high-quality development Innovation leads to high-quality development Transformation of government functions under high-quality development From the quality of economic growth to high-quality development Symbiosis of the investment & financing and the high-quality development