On the basis of self-efficacy theory, self-control theory and psychological resilience theory, this paper discusses the relationship between physical exercise, self-efficacy, self-control, psychological resilience and Internet addiction among adolescents in Beijing. A convenience sampling method was used to conduct a questionnaire survey on physical activity and Internet addiction among 466 adolescents from first to third year in 10 high schools in Beijing, of which 41% were girls and 59% were boys; 1.9% of students were 14 years old, 42.5% were 15 years old, 23.4% were 16 years old, 31.3% were 17 years old and 0.9% were 18 years old. Using the research methods of the literature, correlation analysis and multiple intermediary structure model, this paper constructed and tested the multiple intermediary model between physical exercise and Internet addiction. The results show that physical exercise can significantly predict self-efficacy, psychological resilience and self-control; self-efficacy, psychological resilience and self-control significantly interfered with Internet addiction behaviour; there was a significant difference in the total effect of multiple intermediaries; the effect value was −0.173; the specific indirect effects of self-efficacy, psychological resilience and self-control had intermediary effects in the relationship between physical exercise and Internet addiction; and there was no difference in specific indirect effects. This paper puts forward some countermeasures and suggestions to prevent teenagers’ Internet addiction from cultivating, such as through good sports activities, thereby improving their Internet addiction. We should actively strive to improve teenagers’ deep understanding of the effect of physical exercise and gradually form physical exercise habits, with sports addiction replacing Internet addiction.

In order to better exploit the role of commercial insurance in preventing and mitigating household financial risks and improving social security, this paper explores the influence mechanism of household human capital, a special endowment resource that has potential influence on households’ cognitive and behavioral decisions on commercial insurance, by constructing a structural equation model based on data from the 2017 China Household Finance Survey (CHFS) and introducing its influence on households’ commercial insurance holding behavior. The results show that human capital has a significant positive effect on household commercial insurance holding behavior; financial market participation and risk preference play a part in mediating the relationship between human capital and household commercial insurance holding behavior, with financial market participation playing a greater role. According to the findings of this paper, the government and relevant institutions should increase financial literacy efforts, enhance residents’ correct understanding of commercial insurance and shape a healthy insurance market, so as to promote effective household participation in commercial insurance and the healthy development of China’s commercial insurance market.

The article analyzed the income differences between flexibly and nonflexibly employed persons based on the 2018 China Mobile Population Dynamics Monitoring Data, using OLS methods, propensity score matching (PSM), and Oaxaca-Blinder decomposition. The results show that the income of flexibly employed persons is 11.9%–23.6% higher than that of nonflexibly employed persons, with differences in individual endowment characteristics explaining 53.9% of the income difference and differences in coefficients of nonmarket factors explaining 45.7% of the income difference. The degree of income difference between the two groups in different industries varies; except for the primary industry, the secondary and tertiary industries all show higher income for flexibly employed persons than for nonflexibly employed persons. The difference in income between the two groups was as high as 25% or more in the sectors of “rental and business services,” “education,” and “culture, sports, and entertainment.” The high ratio of employers and self-employed workers in flexible employment and the fact that the average number of hours worked per week is 12.6 hours higher for flexible workers than for nonflexible workers are important factors contributing to the difference in earnings between these two groups. Clarifying the extent of the current income disparity between flexible and nonflexible employment groups and its sources, and formulating and adjusting relevant policies and measures in a timely manner are conducive to creating a fair and equitable labour market environment and promoting the healthy development of flexible employment under the new circumstances.

In order to promote the citizenship of China’s rural floating population and improve the level of new urbanization, as an important source of property income for rural floating population, the transfer of agricultural land or not has an important impact on whether they choose to return to their hometowns or settle in cities. Based on data from the 2017 China Migrants Dynamic Survey (CMDS), this paper explores the mechanism of the impact of agricultural land transfer on the urban settlement intention of rural floating population by constructing a structural equation modeling and bootstrap test. The results show that agricultural land transfer has a significant positive impact on the urban settlement intention of rural floating population, with occupational prestige and identity recognition playing a part in mediating the effect. Actively promoting the identification and orderly transfer of agricultural land rights, improving the quality of urban employment for rural floating population by strengthening vocational skills training, and accelerating the equalization of urban public services to enhance the identity recognition of rural floating population are important in promoting the orderly and effective integration of rural floating population into cities and their genuine citizenship.

As one of the typical occupations in the new forms of employment generated by the platform economy, a courier has become an important channel for workers to achieve employment and increase their income. The labour process control of a courier by platforms has led to a decline in their employment experience and high mobility, which has affected the overall stability of employment. Using couriers as the research target, a questionnaire survey was conducted to explore the influence mechanism of platform labour process control on employment mobility intentions and the heterogeneity of this influence mechanism among different types of workers. The results show that among the three elements of platform labour process control, algorithmic control, incentive control, and evaluation control all have a significant, positive impact on the employment mobility intentions of couriers, with overtime work and job autonomy playing a partly mediating role respectively, job autonomy playing a significantly larger mediating role than overtime work, and part-time workers are more likely to be influenced by platform labour process control than full-time workers. On this basis, it provides a basis and reference for relevant government departments to implement effective regulation of platform enterprises, to control the degree of platform labour process control within a reasonable range, and to enhance the employment stability of workers, which has distinct theoretical and practical significance.