The installation that was the most moving was Ai's Straight. Using rebar recovered from the sites of schoolhouses that were decimated in the 2008 earthquake in Sichuan Province, he painstakingly straightened each and every piece once collected - 38 tons of it. He did this in response to the Government's refusal to acknowledge these young victims (over 5,000). One can imagine the monumental task in both salvaging and then straightening this amount of rebar. The photo above does not do this piece justice. It's definitely one to see in person.
There were many other fascinating installations too: the Han Dynasty urns, the Snake out of children's backpacks, the River Crabs, and the Moon Chests (another favourite of ours), to name but a few. The exhibit as a whole is extremely interesting, with many beautiful and moving things to see. Certainly for us the rebar stood out though. The impact that this average, every day building material has in this context is indescribable. Go see for yourselves.