The National Indoor Stadium (), a.k.a. Folding Fan (æÂÂæÂÂ), is an arena located at Olympic Green in Chaoyang, Beijing, China.
The stadium has a capacity of 20,000 people, and was constructed for the 2008 Summer Olympics. It is nicknamed the Fan (æÂÂÃ¥ÂÂ, shànzi) due to its design resembling a traditional Chinese folding fan.
Glöckneró designed the indoor stadium, in collaboration withàthe Beijing Institute of Architectural Designà(BIAD), after winning an internationalàarchitectural competitionàin October 2003.àConstruction work began in May 2005. Before that, Cox Architecture were engaged as design consultants. The stadium opened its doors on November 26, 2007, for the artistic Gymnastics test event. It is also used for basketball.
At the 2008 Summer Olympics, it hosted the artistic gymnastics, trampolining, and handball events. After the Olympics, the stadium is used for sports competition, cultural and entertaining purposes, and serves as a multi-functional exercise center for local residents. In 2015 it hosted the ice hockey women's world championship Beijing 2015. The stadium was used for ice hockey during the 2022 Winter Olympics and Paralympics.