The graduation project is about exploring an alternative development strategy for Beijing. The project reflects on the grand blueprint of Beijing planning and the original way for urban renewal. It discusses the death of the arrival cities in this planning context and a series of social problems caused thereby. Taking the mitigation of such Beijing planning problems as the goal of the project, this project builds a new development framework for Beijing’s urban renewal based on the theory of the Open Cities: taking the arrival city as an effective open system, and using the arrival city’s renewal as a means of opening the urban space in Beijing. This project reverses Beijing's planning logic and looks forward to finding new development value in the weak space in Beijing's current planning, giving formal planning models a suggestion from informal development forces.