The project is located at the 9th Street in Chongqing Jiangbei District, where has a very mature business atmosphere. There are already some commercial formats on the site, and in the development plan, the existing architectures will be retained and continued for operation. Based on the site status, renovation is a more practical and economical solution than the way that replaces the old with the new. It is, however, more difficult to design perfectly. How to effectively use the original structure is one of the challenges. And how to harmoniously unify the newly built part and the original one is another challenge.