## 2 Literature Review  
### Research on PBIP  
In recent years, sustainable development in the construction industry has become a global consensus. The United Nations' Sustainable Development Goals clearly emphasize the importance of promoting sustainable development in the construction industry [30]. PBIPs promote the application of prefabricated buildings, which helps improve resource utilization efficiency, reduce construction waste and carbon emissions, and achieve sustainable development goals [9]. PBIPs are not only an essential tool for promoting the development of green buildings at the national level but also a key strategy for implementing the international sustainable development agenda. Therefore, the academic community has conducted extensive discussions on PBIPs. For a long time, scholars have paid attention to the text content of PBIPs, emphasized the importance of text measurement in policy research, and conducted qualitative research on its validity based on text mining and content analysis [8; 31]. Research shows that the government must release PBIPs to improve the application scale of PBs and formulate targeted incentive policies that consider the policy's benefit goal [32; 33]. With the increase in the number of PBIPs, some scholars have carried out research from a quantitative perspective. The PBIP is classified, and the evaluation index system of PBIPs is established from capital, land, construction, and technical support [23]. [PERSON], et al. (2018) used the PMC index model to study the effectiveness of the five policies issued by China from 2014 to 2017 [24]. The results show that the PBIP has been paid attention to by the government, and the policy system is gradually maturing. With the continuous improvement of the text content of PBIPs, the following documents analyse their implementation effect. The introduction and application of PBIPs have improved the growth rate of indicators such as the number of prefabricated component suppliers, PB area, the ratio of PB area, the size of the PB market, and the reduction of carbon emissions in the construction industry [15; 34], which has a positive impact on construction performance. However, not all PBIPs have sound implementation effects. On the one hand, the promotion effect of different PBIPs on the development of PBs is different. On the other hand, the needs of stakeholders for policy tools are different [35]. Detailed quantitative policies need to be formulated to produce a significant promotion effect [36]. Land supply, tax preference, and financial support policies are the most cost-effective [10]. Reputation and financial incentive policies are effective in increasing real estate enterprises'willingness to adopt PB [13]. Policy tools such as technology development, talent support, and public services also deserve attention. The above research only interprets the effect of the PBIP from the perspective of performance evaluation, and the dynamic impact of PBIPs on the development of PBs is insufficiently considered [37]. The following studies used game theory to study the PBIP and analyzed the effect of the primary beneficiaries of the PBIP on the development of PBs. First of all, in the game study of both sides, the incentive behavior of the government affects prefabricated component suppliers and real estate enterprises, especially the fiscal and tax policies that effectively promote the prefabricated component suppliers to provide prefabricated components [38]. Through financial subsidies, fund incentives, technical support, and other incentives, the government helps reduce real estate enterprises' production costs and improve the popularity of PBs in the construction market [39]. However, some real estate enterprises' response to the incentive policy is insufficient, hindering the policy's application and implementation [40]. The government must also fully play its guiding role and encourage real estate enterprises to participate actively in applying for PBs.