Which department is in charge of Lanzhou urban rail transit?

Urban rail transit in all cities is under the jurisdiction of the municipal government of the city where it is located, and the urban rail transit company belongs to the municipal engineering unit. For example, urban rail transit companies are of the same nature as railway bureaus and bus companies. Rail transit companies manage urban subways and light rails. The railway bureau is in charge of railways, and the bus company is in charge of public transportation. Their company has several major departments: operation department, construction department and property department. Head office. I am engaged in subway construction and belong to the construction party, that is, Party B. Party A is a railway company. Asking for adoption, asking for extra points.