SignificanceAt present, many environmental laws and regulations are enforced in China, but they are often not well evaluated for their performance. In this study, the health effects of beehive coke oven operations, the ban of the ovens, and the slow implementation of the ban were assessed quantitatively, showing the importance of not only the legislation but also the implementation of the law. This study provides a good example that shows how environmental legislation and implementation can be evaluated to scientifically support decision making.

Since early 2020, coronavirus disease 2019 (COVID-19) has become a worldwide pandemic crisis. 1 Countries and regions have established pandemic prevention policies, which have had major impacts on social, economic, medical and dental activities, as well as lifestyles. Countries have adopted social distancing policies with varying degrees of success. People are increasingly realizing that even after the pandemic dissipates, social distancing may continue long into the future. Important changes have also occurred in the provision and utilization of dental care and education, 2-4 with the emergence of COVID-19 disrupting, in particular, how medical education, including dental education, is structured and provided. 4-8 The COVID-19 pandemic highlighted the need for alternative educational methods such as distance learning. 4-8 In traditional dental education, high-quality practical skills training is inseparable from iterative, face-to-face guidance and communication. 9 Today, dental education methods are increasingly diverse, with distance learning becoming an important supplement to on-site

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