Chinese cities are experiencing unprecedented changes. After about 40 years rapid construction, what follows is the renewal and reconstruction of those prompt construction products. On the one hand, it is to make up for the quality defects caused by speed, and on the other hand, it is to face the dynamic adjustment of rapidly changed daily life. Rapid construction has met people's basic functional needs, while the current adjustment bears meanings of both function and spirit. Public buildings take a substantial leading role. Relying on upgrading functions and forms, they reconstruct the critical nodes of the city and then bring new changes in a larger area and boost the quality of urban space. The relocation of the Liutan Agricultural Trade Market is a typical improvement experiment, a crucial-livelihood guarantee and a critical step to upgrade and adjust the space quality of the whole Liutan area.