Group 1 - The article emphasizes the establishment of a "three-in-one" funding guarantee mechanism involving central budget investment, ultra-long-term special bonds, and special bonds to support local government projects in key areas [1] - Local government special bonds currently focus on supporting ten key areas, including transportation infrastructure, energy, agriculture, ecological protection, social undertakings, logistics infrastructure, municipal and industrial parks, major national strategic projects, affordable housing, and new infrastructure [2] Group 2 - The detailed categories of projects supported by local government special bonds include various subfields such as railways, highways, renewable energy bases, urban sewage treatment, and affordable housing projects [3][4] - There is a clear list of prohibited projects for local government special bonds, which includes projects with no revenue, government office buildings, image projects, real estate developments (excluding affordable housing), and general competitive industry projects [5] Group 3 - The application process for local government special bonds involves several steps, including project proposal submission, project information entry into the provincial government bond management platform, initial review by relevant departments, and expert evaluation [6][7] - Required documentation for the application includes implementation plans, feasibility studies, financial evaluation reports, planning permits, project approval documents, environmental impact assessments, and income projections [8][9]