To study the impact of digital inclusive finance on the upgrading of marine industry structure, panel data from 11 coastal provinces and cities from 2011 to 2020 were selected. The fixed effects model and mediation effect test model were used to empirically analyze the impact and mechanism of digital inclusive finance on the upgrading of marine industry structure. It is found that digital inclusive finance and its three sub dimensions can promote the upgrading of the marine industry structure. The positive promotion effect of digital inclusive finance on the northern and southern marine economic circles is more significant than that on the eastern marine economic circle. Marine technology innovation and human capital play an intermediary role in this transmission process.

ESG is highly compatible with the concept of sustainability in China, and there is no clear conclusion on the impact of ESG performance on the dual innovation of enterprises. Taking Shanghai-Shenzhen A-share listed companies from 2012 to 2022 as the research sample, the impact of ESG performance on enterprise exploratory innovation and utilization innovation was deeply studied, how ESG performance promotes the improvement of enterprise dual innovation ability was analyzed, and the impact effect of enterprise ESG performance on enterprise dual innovation was empirically examined. The research finds that ESG performance has a significant promotion effect on the promotion of the enterprise dual innovation ability, and the better the ESG performance, the stronger the promotion effect on the enterprise innovation of utilization. The mechanism analysis shows that the good ESG performance improves the dual innovation ability by alleviating financing constraints, and the risk taking level has a significant positive impact on the improvement of the utilization innovation ability. The heterogeneous analysis shows that the promotion effect of ESG performance on the dual innovation is more significant in non-state-owned enterprises and listed companies located in central China. Digital transformation plays a positive regulatory role in the influence of ESG performance on the dual innovation.

Utilizing data from Fuzhou and Xiamen in Fujian Province from 2013 to 2022, extreme heat waves were employed as the focal point to conduct a comprehensive statistical assessment of vulnerability across three dimensions such as risk exposure, sensitivity and adaptability. Furthermore, the influencing factors of extreme heat waves were examined using geographically weighted regression and geographic detector models. The findings reveal that disparities in geographical environmental conditions and socio-economic development levels between Fuzhou and Xiamen have resulted in varying degrees of extreme heat waves in both cities, with Xiamen demonstrating heightened vulnerability across multiple indicators. The resident population size, level of economic development and green space coverage within urban areas exert significant influence on extreme heat waves. Specifically, GDP and green space coverage yield negative impacts while the resident population yields positive effects. Additionally, financial resources and technological infrastructure also moderately impact the occurrence of extreme heat waves in both cities. Therefore, amidst global climate change and frequent meteorological disasters, optimizing population distribution alongside waterways is imperative along with augmenting urban greening initiatives to enhance vegetation coverage rates while concurrently improving infrastructure construction to ensure economic development aligns harmoniously with ecological benefits.

A favorable business environment can effectively improve the level of digital economic development in provinces. It is of great research significance to optimize the business environment in order to promote the digital economy. Using the research method of fsQCA(fuzzy-set qualitative comparative analysis), the path of as sit in the development of digital economy in the business environment was analyzed from the perspective of configuration. It is found that a single business environment element does not constitute a necessary condition for promoting the development of the digital economy. The market environment, government environment, and the legal and policy environment plays a pivotal and essential role in fostering the advancement and growth of the digital economy. The construction of the market environment is significantly lagging behind due to its regional characteristics. In order to create a healthy market environment, it is necessary to create a relaxed market atmosphere.

As one of the most important economic, financial, and trade centers in China, Shanghai’s air transportation system plays a crucial role in promoting regional economic development. As the dual airport pattern of Pudong International Airport and Hongqiao International Airport gradually takes shape, how to achieve efficient and coordinated development of these two airports has become an important research topic. Therefore, the interactive mechanism between Shanghai’s dual airports and regional economy was explored based on system dynamics, the promoting effect of coordinated development of dual airports on regional economy was analyzed. Relevant policy recommendations are proposed. Selecting relevant data from 2012 to 2022,Vensim PLE software was used to establish a system dynamics model for empirical analysis, in order to explore the coordinated development path of Shanghai’s dual airports. Through model simulation analysis, the economic system model of Shanghai’s dual airports is optimized, and policy recommendations are obtained to improve the synergy effect of Shanghai’s dual airports.

Based on the Chinese General Social Survey (CGSS) large-sample survey data, the impact of the public’s satisfaction of government environmental governance and the public participation effectiveness on government trust were empirically analyzed. It is found that the public’s satisfaction with the environmental governance of the central government (local government) has a significant positive impact on the trust of the central government (local government). However, the public’s satisfaction of the central government’s environmental governance has a significant negative impact on the trust of the local government. The study also shows that the process effectiveness and the result effectiveness of public participation have a significant positive impact on the trust of the central government and the trust of the local government respectively. Therefore, generally speaking, the improvement of the public’s satisfaction with the government’s environmental governance can enhance the government trust, but the relationship between the two is complex to some extent. Protecting the right of the public to participate effectively can enhance the trust of the governments, and “procedural justice” and “result justice” are both indispensable.

User behavior data is an important basis for decision-making in e-commerce enterprises. The AARRR(acquisition,activation,retention,revenue,referral) model, funnel analysis model, and user behavior analysis methods in the field of data analysis were explained. Based on the basic indicators and preferences of user behavior, a comprehensive analysis was conducted through multiple dimensions, and the conclusions drawn were presented in a graphical manner. Finally, the conversion rate in the user shopping process was presented in the form of a funnel chart. E-commerce enterprises can utilize user behavior research to provide customized services for individuals, thereby achieving refined market decision-making.

Returning home for entrepreneurship is one of the important measures to promote common prosperity. The rise of rural digital trade has accumulated rich previous experience, economic resources, and entrepreneurial opportunities for returning home for entrepreneurship activities, which can effectively drive the successful development of returning home for entrepreneurship, promote the spontaneous growth of rural economy, and inject more innovative vitality into rural economy. Digital trade can achieve common prosperity between urban and rural areas in terms of channels, resources, and markets by connecting urban and rural entrepreneurship channels, integrating urban and rural entrepreneurship resources, and opening up urban and rural entrepreneurship markets. Thereby, narrowing the wealth gap between small towns and rural areas. It is suggested to strengthen the role of digital trade in promoting entrepreneurship activities in rural areas by improving relevant legal regulations, promoting vocational training for rural returnees, and encouraging cross departmental cooperation among returnees, in order to better achieve common prosperity.

Selecting data from A-share listed companies from 2018 to 2022, the impact of companies’ degree of “greenwashing” on stock price collapse risk was empirically analyzed. The research findings indicate a significant positive correlation between the degree of “greenwashing” and stock price collapse risk, meaning that the higher a company’s “greenwashing” score, the higher the risk of stock price collapse. Additionally, the proportion of institutional investors and analyst coverage plays a moderating role in this relationship, as the proportion of holdings and level of analyst coverage increase, they mitigate the collapse risk brought about by “greenwashing”. Furthermore, through heterogeneity tests, it is observed that the positive correlation between “greenwashing” scores and stock price collapse risk is more pronounced in private enterprises and non-manufacturing companies.

Taking A-share listed companies from 2008 to 2021, it is found that the application of AI has a significant positive impact on the outward foreign direct investment(OFDI), and the conclusion is still established after relevant tests. The results show that the impact of AI application on enterprise OFDI is mainly realized through three ways: improving enterprise total factor productivity, reducing financing constraints and increasing overseas executives. For enterprises in the eastern region, state-owned enterprises and non-high-tech enterprises, the impact is more obvious.Empirically verifies the positive role of AI application for Chinese enterprises in opening up to the outside world, which has important enlightenment to promote enterprises to better “go out”.