General contracting: a contracting method adopted by the project owner to achieve the project objectives. That is to say, the unit engaged in the construction of the project is entrusted by the owner to contract the whole process or several stages of the development cycle of the construction project from decision-making, design to trial operation in accordance with the contract. Under the current policy document of the national development and Reform Commission and the Ministry of housing and urban rural development jointly implementing the whole process engineering consulting service and EPC, in principle, a whole process engineering consulting team with the whole process engineering project manager as the general director is required to provide consulting services for the EPC at all stages. Note that only when the contracted tasks include two or more items in the development cycle at the same time can they be called general contracting. The design stage can start from the scheme design, technical design or construction drawing design, and the separate general contracting is included in the scope.