Taichung Cultural Centre is located in between serene Taichung Gateway Park and bustling Cultural Business District. In such subtropical environment, it constantly absorbs fluid masses i.e. People, Humidity and Heat which flow from surrounding. Influenced by Taichung air, a symbolic of Taichung’s dream is risen up from the ground which boldly represents the new Taichung Cultural Centre. The architectural cloud that bridges the sky and the earth, imagination and reality, knowledge and people. By creating voids into the project. Surfaces allow absorption and circulation of the fluid masses exchange between different chambers. A cloud alike entity bridges voids which creates inter-relation between Public Library and Fine Art Musuem and natural flows circulation from Taichung Gateway Park and Cultural Business District. Big funnels diffuse turbulence wind and circulate heat and moist into a precondition chamber, an underground heat exchanger and dehumidifier. It is to reduce energy consumption on air conditioning system and is to reduce relative humidity.The passive preconditioned air also flows through enclosed plaza areas provides comfortable micro climate to semi-open lobby area for both Public Library and Fine Art Musuem.