Exterior wall introduction: The building's interior and exterior walls and roof adopt a double-layer curtain wall structure. The outdoor outer layer is a perforated metal plate curtain wall, and the indoor outer layer is a glass curtain or metal plate. Some people compare the construction difficulty of Dalian International Conference Center with that of Beijing's "Bird's Nest". Although the construction years are different, it is certain that this building is definitely one of the most difficult projects in the world.