Yinchuan is the famous ancient city in northwest China. The construction of a city opera is an action to highlight the great culture of the city. The difficulty of project lies in how to create new buildings to be harmoniously integrated into the historical district and conform to the historical and cultural characteristics of Yinchuan. Our design theme is “Music Ocean”, and the building is like a big fish, lying on the “water surface” made of blue tiles that simulate the ocean. People can walk to the roof space between the two music over the city. From this “water surface”, through the large public auditoriums and look out over the city.