In addition, in the feasibility study stage, the project must have at least a scheme design, and professional opinions such as municipal, transportation and environment are also essential. For real estate projects, there are generally detailed plans or detailed construction plans. The investment estimation requirements at this stage are relatively detailed, and the principle error is10%; Accordingly, it is necessary to refine the financing plan and implement the annual construction investment, and the projects with bank loans must have credit certificates issued by banks. When many projects are submitted for approval, the conditions are relatively mature, and land, planning, environmental assessment and professional consultation are basically available. In particular, the source of project funds is entirely self-raised by the project legal person, and there is no financial fund or special policy. This kind of project is often a combination of project proposal and feasibility study report. To get the relevant support from the government, a project must first have a project proposal. After the project proposal is screened, the feasibility study of the project will be carried out, and the feasibility study report will be finalized after expert argumentation. This is actually a common examination and approval procedure, and it is the basis for decision-making in alternative projects and pre-construction work plans.