To revive the South Chicago neighbourhood and respond to the Chicago public health agenda, our group proposed a Health City as a new anchor for this district. As the pioneer of the concept of health city, the mission of the public education centre is to integrate the Health city's resource and introduce it to more people. The success of the building will exert a positive influence on the following development of Heath city. An increasing number of people and investors will be attracted to this place. And finally South Chicago will reach its new golden age with the new brand of Health City. 1, The design of the building follows the frame of Health City, and shares the same mission with the Health City. My building achieve the mission of attracting people through the interactive design with the attractive assets in the site. 2, The design principle of interaction coincides with the group spatial strategy of the master plan. For one thing, The interactive route system in my building is an important part of the west to east spatial strategy of our group. For another, I establish connections between the public building route and the diagonal downtown-view route in the design of my building. 3, The design responds to the challenge of the orewalls. Inspired by the original scenery inside the orewalls, I design an interactive route to bridge the historic atmosphere inside the orewalls and the natural environment surrounding it. So people could experience both of these two space qualities conveniently. 4, The structure, clinate and material proposals all dedicate to improve the architecture concept of interaction which stands for less obstruction and more extension.