An empirical study of the economic effects of changes in China's population age structure Empirical study of the economic effects of changes in China's population age structure An empirical study of the social effects of changes in China's population age structure Empirical study of the social effects of changes in China's population age structure An empirical study on the economic growth effect of financial agglomeration An empirical study on the effectiveness of China monetary policy An empirical study on the effects of corporate brand on product evaluation An empirical study on the effects of RMB's real effective exchange rate on China's major macroeconomic variables An empirical study on the effects of health on the income of farmers in China An expansion study on the economic basis of currency integration in East Asia