This is the an image from the entrance to the Alexander Ochs (Berlin) Ai Wei Wei exhibit. Seems this artist is making many headlines these days, not all for his provocative artworks, but also for his socio-political beligerance.
In any case the pieces in the show were interesting aesthetically, especially the one seign at the backgroun, Teahouse 2009, my favourite.
Ai Wei Wei website
Alexander Ochs Gallery, Berlin