Legal analysis: four don't hurt: don't hurt yourself, don't hurt others, don't be hurt by others, and don't stop others from hurting. Four don't let go: the cause of the accident is not ascertained, the responsible person is not dealt with, the responsible person and the masses are not educated, and the rectification measures are not implemented.

Legal basis: Article 4 of the Law of People's Republic of China (PRC) on Work Safety requires production and business units to abide by this Law and other laws and regulations related to work safety, strengthen the management of work safety, establish and improve the responsibility system and rules and regulations for all employees in work safety, increase the investment guarantee of funds, materials, technology and personnel in work safety, improve the conditions of work safety, strengthen the standardization and informatization construction of work safety, and build a dual prevention mechanism of classified management and control of safety risks and investigation and management of hidden dangers. Production and business units in emerging industries and fields, such as platform economy, shall, according to the characteristics of their industries and fields, establish and implement the responsibility system for all employees in production safety, strengthen the education and training of employees in production safety, and fulfill the relevant production safety obligations stipulated in this Law and other laws and regulations.