In order to welcome the Olympics, the Bird's Nest, which is responsible for the opening and closing ceremonies of the Beijing Winter Olympics and Paralympics, has also been upgraded and remodeled. The use of digital twin system replica of the stadium, the stadium digital modeling, in all the stage transformation and facilities and equipment into the field before all the programs are in the "digital bird's nest" for pre-simulation, analysis of the overall layout, linkage process and details of the deployment, and repeated use of multi-perspective, full-time rehearsal to verify the process program.