The project is located at the end of the central axis of Jinan West Railway Station area, directly south of Jinan International Convention and Exhibition Center, and an important node of Qilu gateway. It is a key area to display the cultural connotation of Qilu, show the characteristics of Jinan, and highlight the charm of the new urban area in the west. While starting to solve the contradiction between high density and land use, the project examines the interaction between the building and the city from a higher perspective, providing a strong guarantee for the high supporting demand of Shandong International Convention and Exhibition Center in the north, and achieving a win-win situation in many aspects. While meeting its own needs, "Wanrong Cloud City" has become the best outdoor "second exhibition hall" of the International Convention and Exhibition Center with its memorable design ,and also meets needs of the exhibition for the urban display. Planning design: Under the multiple strict restrictions of "high plot ratio" and "narrow and long land", the three towers are chosen to digest the huge volume. The whole three towers are lined up along the long side of the site, and are staggered in height, forming the undulating skyline of the city. Architectural design: The three towers are connected through large cantilevered corridors at a height of 100 meters, making the originally isolated office towers blend in form and penetrate in function, making it a real "aerial complex". The corridors adopt all-steel structure with flexible connection to the towers. The supporting form is a friction pendulum support. Anti-drop design displacement is 500mm ; anti-collision design displacement is 300mm. The corridors wouldn’t lift, collision, or fall under the action of three-way earthquake. Eight viscous dampers are installed between the corridor and the main building to ensure their stability under the action of wind load and small shock.