Risks related to project design, construction, operation and maintenance, such as project design not up to standard; construction cost overrun, trial operation not up to standard, technology not up to corresponding economic indicators, etc.; construction period delay, not completed according to the scheduled construction period; technical risk and risk of transfer assets not up to standard, etc. In response to such risks, it is necessary to formulate clear construction standards, quantify some investment that is not easy to control in the construction process, and make clear arrangements for the excess part.