The National Centre for the Performing Arts (NCPA) colloquially described as The Egg, is an opera house in Beijing, People's Republic of China. The Centre, an ellipsoid dome of titanium and glass surrounded by an artificial lake, seats 5,452 people in three halls and is almost 12,000 m² in size. It was designed by French architect Paul Andreu. Construction started in December 2001 and the inaugural concert was held in December 2007. The cloisonné (or Jingtailan, literally "Blue of Jingtai") metalworking technique and tradition is a specialty of Beijing's cultural art, and is one of the most revered traditional crafts in China. Cloisonné making requires elaborate and complicated processes which includes: base-hammering, copper-strip inlay,
