Third-largest exhibition center in the world. Opened in 2015, National Exhibition And Convention Center of Shanghai (NECC) is the third-largest exhibition center in the world, with an indoor capacity of 400,000m2. The design of NECC is inspired from a "four-leaf clover" with a plaza at the core and four exhibition halls as its "leaves". It is located in close proximity to the Shanghai Hongqiao Airport and Hongqiao Railway Station.