A new city center is being planned in the suburbs of Nanjing, China. The design joint venture of Waro Kishi, Naoyuki Nagata, Tomohiro Hata, and Masahiro Kinoshita/KINO architects participated in the international design proposal for the construction of X project, and was selected as the best firm. The total floor space of the office and residential complex is approximately 300,000 square meters, so tower-type forms are common, but for this project, we proposed a European-style configuration of a series of mid-rise buildings with courtyards to provide an urban public space facing a major street.