Ai Weiwei, dissident Chinese artist, and fragments of a cultural past

There’s a map of China in the Sackler lobby. It won’t strike you as a map if you look at it. It’s a structure made of big, dark, wooden beams pinned together with smaller wooden posts, looping around a central area at improbable, disjointed angles, like something a giant child might build with a set of Tinkertoys.</p.