Ai Weiwei (born 28 August 1957) is a Chinese artist, activist, and philosopher, who is also active in architecture, curating, photography, film, and social and cultural criticism. Ai collaborated with Swiss architects Herzog & de Meuron as the artistic consultant on the Beijing National Stadium for the 2008 Olympics. Besides showing his art he has been investigating in the corruption and cover-ups under the power of the government. He was particularly focused at exposing an alleged corruption scandal in the construction of Sichuan schools that collapsed during the 2008 Sichuan earthquake. He intensively uses the internet to communicate with people all over China, especially the young generation. On 3 April 2011 Chinese police detained him at Beijing airport and his studio in the capital was sealed off in an apparent crackdown by the regime on activists and dissidents.