In order to promote the healthy and rapid development of e-commerce, China launched the construction of National E-commerce Demonstration Cities in 2009. This paper presents a feasible road to achieving sustainable development through the new urban development model. The paper employs the data of 265 cities in China from 2007 to 2016 as a research sample and uses the multiperiod difference-in-difference method to test the impact of National E-commerce Demonstration Cities pilots on urban environmental pollution. The basic result shows that urban environmental pollution is reduced by about 17.5% on average after becoming pilot cities, and the National E-commerce Demonstration Cities policy significantly reduces urban environmental pollution. We adopt a series of robustness tests, and all tests show that the basic result is still robust. Moreover, heterogeneity tests show that the pollution reduction effect of the National E-commerce Demonstration Cities policy in big cities is stronger than in small- and mid-sized cities, and there is no significant difference between the eastern cities and mid-western cities. The pollution reduction effect of the National E-commerce Demonstration Cities policy is more significant in cities with high human capital, low fiscal expenditure, and high information infrastructure. The empirical results of the spatial Dubin model show that the pilot city has no significant spatial spillover to neighboring cities. In the era of rapid development of e-commerce, this study provides a reference for developing countries to improve the urban environment and achieve sustainable development by using the new urban development model integrating e-commerce and urbanization.

The Chinese government focuses on the high-end equipment manufacturing industry to achieve a target of carbon neutrality. This study takes China’s Bohai Rim as a case study. First, the Tapio decoupling model was used to analyze the carbon emission status of the high-end equipment manufacturing industry in the Bohai Rim. Second, LMDI was used to determine the main factors of carbon emission. Similarly, the Monte Carlo simulation predicted the time of carbon neutrality. The results found that the relationship between carbon emission and the development of the high-end equipment manufacturing industry is that of strong decoupling, but there is still a risk of “recoupling.” The scale effect is the primary driving force for carbon emission reduction in the equipment manufacturing industry, followed by a structural effect and a carbon emission intensity effect. In the baseline scenario, low-carbon scenario, and technological breakthrough scenario, carbon neutrality will be achieved before 2060. The results of the study suggest that China should improve energy utilization efficiency and encourage green innovation.