Timmons' Framework

As a complex social innovation and transformation activity, social entrepreneurship involves subjects such as social entrepreneurs and social organizations. It includes the overall process of social value creation and is a continuous logical decision-making and strategy selection process. Drawing on the Timmons's model, this study combines the research ideas proposed by Shane and Venkataraman with the identification and development and utilization of entrepreneurial opportunities as the main line. It subdivides the social entrepreneurship process, including the source and identification of social entrepreneurship opportunities and explores the interaction between the various elements in the entrepreneurial process. Therefore, according to this logic, we have constructed the overall research framework of social entrepreneurship as shown in Figure 2.

As the initiator of social entrepreneurial activities, personal characteristics and life experiences make social entrepreneurs have differences in their ability to identify social entrepreneurial opportunities. Social entrepreneurship opportunities are embedded in various social and institutional environments at the individual, regional and social levels. When the external market and the government functions fail, pro-social motivation of social entrepreneurs is strengthened. They creatively identify the entrepreneurial opportunities implied in the adverse social environment and adopt strategies such as persuasion and bricolage to assemble various resources. Then they form social entrepreneurial organizations, flexibly use various legitimacy strategies to establish organizational legitimacy,

shoulder social missions and realize personal values. As the economic power source of social entrepreneurial activities, social organizations have both the social attribute of altruism and the entrepreneurial attribute of utilitarianism. On the one hand, they are striving to achieve social mission, on the other hand, they need to realize economic independence through commercial activities, thus showing a mixed organizational form. This dual status provides the necessary material basis for the development of its social activities, conducive to maintaining the sustainable development of the social value creation process and increasing the overall welfare of the society. To establish the legal status in the hearts of other members of the society, social entrepreneurs keep in mind the social mission, safeguard the core interests of the beneficiaries of social activities, actively change social traditional ideas and promote social change. And in the process, social organizations accumulate commercial profits and achieve economic goals, showing more positive externalities.

The origin, identification, development and utilization of social entrepreneurship opportunities are an organic and unified logical process, which is a dynamic process. Entrepreneurs rely on social organizations to adopt various measures to gather internal and external resources, establish organizational legitimacy, and maintain the sustainable development of the organization. The identification and development of opportunities has been running through. Entrepreneurs continue to optimize the development and utilization of opportunities and improve the efficiency of resource utilization in the process of continuous adjustment. Therefore, the subject, opportunities and resources are promoted cyclically in the process of social entrepreneurship. Subjects rely on initiative to identify opportunities and gather resources. Opportunities give the subjects stronger motivation to seek resources. At the same time, resources provide the necessary material basis for subjects to develop and utilize opportunities, thus forming a dynamic interactive mechanism to ensure the sustainable development of entrepreneurial activities.