A New Analytic Framework on Mainstream Economic System in Complex Reality Constructing ecological system of digital culture industries in the new era Characteristics of China’s Development in the New Era Explained in Light of Economic Principles Human Capital Structure and Economic Growth:From the Perspective of New Structural Economics CITIES ON THE THRESHOLD OF A NEW MILLENNIUM FPC: A New Approach to Firewall Policies Compression The New Normal from the Perspective of Macro History and Grand Logic of China's Economic Development New Industrialization: Characteristics,System Development and Implementation Pathway A new ApproAch to nAturAl cApitAl sustAinAble development ReseaRch on the hieRaRchical stRuctuRe of the metRopolitan system and economic development of the pRovincial capital uRban ciRcle in shandong