Over the past 40 years, the implementation of the family planning policy in China has led to the creation of many only-child families. In the process of modernization and urbanization, it is critical to focus on the intergenerational relationships in only-child families and their associational mechanism on the life satisfaction of middle-aged and elderly parents, which has crucial implications for them staying active and healthy aging. Using the survey data from Chengdu, China, this study analyzed the characteristics of only-child parents’ life satisfaction and family intergenerational relationships, and explored the associational mechanism of family intergenerational relationships on only-child parents’ life satisfaction in urban families, as well as the possible moderating role of gender. The results indicate that there are gender differences in the life satisfaction of only-child parents in urban families, and men are more satisfied than women. Moreover, parents of sons and daughters differ in life satisfaction from the dual-gender perspective. Parents of daughters are likely to have higher life satisfaction, especially mothers. The only-child families have not moved toward nucleation in urban families, and intergenerational members maintain close contact and provide frequent mutual support to achieve individual and family development. There are significant gender differences in structural, associational, affectual, and functional solidarity among only-child. This study confirms that there are differences in the associational mechanism of family intergenerational relationships on life satisfaction in different dimensions. Affectual solidarity is the most influential factor of life satisfaction. In terms of normative and consensual solidarity, gender plays a moderating role. For men, normative and consensual solidarity is beneficial for improving life satisfaction, but it has an insignificant effect on women. The effects of structural solidarity, association solidarity, and functional solidarity are not significant.

Currently, urbanization driven by global capital flows entails a main trend in many large cites in China, while global capital investment in small inland cities especially in western China is extremely scarce, where their globalization characters the powerful nationalization power and market activation. Dunhuang, a small inland city in western China, has transformed successfully from an agricultural county to an international tourist city, a platform for worldwide cultural communication, and a node city in the Belt and Road region because of its unique and brilliant resources: Mogao Grottoes and Dunhuangology. Therefore, this paper develops a conceptual framework of the multiple cooperative mechanisms and globalization path (MCMGP) of Dunhuang, elaborating the process of industrial transformation, urban globalization, and multiple cooperative mechanisms between government and market actors based on interviewing records and statistics. Findings show that the MCMGP features government-led intervention, resource orientation, and centralization that embodies the driver of state-owned enterprises (SOEs). Also, the MCM in Dunhuang’s globalization contains the mechanism of enrolment, mobilization and action, governance and global marketing, distributed in the two phases. Equally important, in response to the Belt and Road Initiative (BRI) and Silk Road (Dunhuang) International Cultural Expo (SRDICE) from the state, the city government has significantly reinvested and refined cultural tourism via governance mechanisms, carving out a key node city in the Silk Road and elevating an international tourist city. Environmentally, Dunhuang’s tourism internationalization enhances the process of the development of a sustainable shared mobility industry. Furthermore, its tourism development and social–ecology system maintain the synergistic relationships which international tourism promotes such as urban ecosystem and public welfare and in turn, social–ecological enhancement serve Dunhuang’s international tourism well. Practical implications of how Dunhuang’s experience may have lessons for others are discussed in China’s peculiar socialist market economy discourse.

Urban shrinkage in resource-based cities manifests not only as population decline but also as spatial mismatches between current human activities and inherited urban systems. Existing studies have mainly focused on single dimensions such as service accessibility or land-use efficiency, with limited attention to the multidimensional incompatibility between human activities, service systems, built environment, and industrial risks. This study develops a human activity-centered spatial mismatch framework to examine the spatial consistency between human activities and urban systems in shrinking resource-based cities. Taking the central urban area of Daqing as a case study, this study integrates multi-source urban big data across four spatial dimensions—human activity, public service provision, built environment, and industrial risk exposure—and identifies three types of spatial mismatch: service supply–demand mismatch, built environment mismatch, and industrial risk exposure conflict. The results show that human activities in central Daqing exhibit a polycentric pattern, while their spatial distribution is not fully consistent with existing urban systems. Specifically, service accessibility mismatch, built environment underutilization, and human activity–industrial risk overlap coexist across different areas, reflecting asynchronous adjustment between human activities and inherited urban structures. This study provides a human activity-centered framework for diagnosing multidimensional spatial conflicts in shrinking resource-based cities and supports a transition from expansion-oriented planning toward differentiated adaptive spatial governance.