Contractualised Governance: An Analysis of the Internal Logic of "Private Cities" in Achieving Industry-City Integration

China's urbanisation development consists of various forms of management bodies, among which the ‘private city’ led by enterprises is an innovative path of urbanisation development, and Chengdu Jiaolong Harbour selected in this paper is one of the representative cases. The enterprise acts as the ‘housekeeper’ of the area, while the government transfers the rights of land use, income, planning and public governance to the Jiao Long Group, and the two sides determine the power allocation and responsibility boundaries by contractual relationship, forming a contractual governance. Based on this, this paper analyses the theory of rational choice institutionalism, puts forward three internal logics of government-enterprise cooperation, and makes a risky outlook on the future development of ‘private cities’.