The persistence of the comprehensive use of details and small space makes the area use rate of the standard storey of the Wanda Plaza office building exceed 70%. Part of office units will reserve VIP independent toilets and some high-rise office storey will set independent lunch rest rooms. Adhering to the principle that apply the material into proper position and save every space, we put those useful into existence but cut off those useless, applying the features of the existent building structure system to pursue the utmost use of the space value.