theoretical and empirical study of the Pearl River Delta region Theoretical and empirical study on the power list system Theoretical and empirical study of teachers' sense of gain 市场制度与企业重组：对珠江三角洲地区的理论与实证研究：theoretical and empirical study of the Pearl River Delta region Theoretical and empirical study on cyclical company valuation Theoretical and empirical study of family farm development a theoretical and empirical study based on the perspective of social capital Theoretical and empirical study on the governance of commercial banks Theoretical and empirical study on the operation of urban public service in China theoretical and empirical study based on Chinese market