Core Viewpoint - Zheng Hangseng's contributions to sociology in China have been pivotal, particularly through his theories and the textbook "Introduction to Sociology," which has influenced generations of students and laid a foundation for an independent knowledge system in Chinese sociology [1][2]. Group 1: Theoretical Contributions - Zheng Hangseng's theoretical consciousness has facilitated a deep transformation in Chinese sociology from "academic awareness" to "disciplinary confidence," emphasizing the need for local theories that can explain the complexities of Chinese society [2][3]. - The "Five Theories" proposed by Zheng, including Social Operation Theory and Social Transformation Theory, provide a unique analytical framework for understanding the changes in Chinese society, moving away from over-reliance on Western theories [3][4]. Group 2: Practical Implications - Social Operation Theory offers essential insights for government policy-making, emphasizing the interconnectedness of economic, political, and cultural subsystems, which is crucial for sustainable social development [4]. - Social Transformation Theory serves as a guide for market entities and social organizations to navigate challenges and seize opportunities during periods of societal change, helping them to adapt their strategies accordingly [4]. Group 3: International Academic Dialogue - Zheng Hangseng's work in constructing an independent knowledge system in Chinese sociology has reshaped the international academic dialogue, enhancing China's voice in the global sociology community [5][6]. - The engagement with international sociology allows for the sharing of Chinese theoretical and practical experiences, while also incorporating advanced international theories to further develop the Chinese sociological framework [6].