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The project is located in the central business district of Hexi New Town, Nanjing, Jiangsu Province, is a landmark building in Hexi, Nanjing, the tower part of the underground 2 floors, 56 floors above ground, the total elevation of the floor 221.55m, the total height of the building 231.20m.The most important feature of the project is that the external support is involved in the overall work and provides the corresponding lateral stiffness, and there is no floor connected to the floor, as a doubleStructural stress system, there is no precedent in China.