In the last several weeks Ai Weiwei has produced several new artworks, from a heavy metal music video, a large-scale diorama depicting his imprisonment, to an installation of 150 tons of straightened rebar taken from schools that had collapsed during the 2008 Sichuan earthquake. He also designed the cover for Time Magazine. At the 2013 Venice Art Biennale, Weiwei produced another installation, this once featuring 886 antique wooden stools! It has been common in Chinese culture for families to own one or more of the 3-leg stools and they were often passed down from generation to generation. As of recently, these are more and more being replaced by plastic and other alternatives to wood.