What are the characteristics of the traditional contracting mode in the field of construction engineering in China?

The characteristics of the traditional contracting mode in the field of building engineering in China are: the traditional contracting mode of building engineering in China is design-bidding-construction, which is the most important contracting mode of building engineering in China. The most prominent feature of this model is to implement construction projects step by step, and another stage can only be started after one stage is over. With the development of construction project management, the disadvantages of this model are becoming more and more obvious. For example, the construction project has a long construction period; It is difficult for all parties to coordinate and define their responsibilities; The role of the contractor is strictly limited to the construction stage, and it is impossible to participate in the design of the project, which may lead to poor constructability of the design.