The Guangzhou Baiyun International Airport Phase III Expansion Project is the largest reconstruction and expansion project in the history of the Chinese civil aviation airport construction. The CNY 53.77 billion project will increase passenger and cargo volume by 50% and 52%, respectively. During the construction of two new runways, a new terminal, and expansion for an existing terminal, and a comprehensive transportation center, the existing airport infrastructure had to remain in operation while meeting a tight deadline. The project developers selected Bentley applications to establish digital construction methodology and deliver the complex project. They created 3D models of the full project, enabling teams to adhere to national standards for project qualities. With enhanced collaboration, they detected and resolved 3,200 clashes early in development, saving CNY 15 million in potential rework. In total, going digital helped teams improve design efficiency by 35%, and data management combined with digital construction rehearsals is expected to improve construction efficiency by 25%.