wrote about a few days ago. Today I take up his painting and sculpture, which is also fascinating. His most famous paintings, like the one above, are made using actual gunpowder explosions. He carefully sets up the power and charge in such a way that the blast projects powder onto the canvas, and, boom. These are big canvases, mostly taller than the people who come to look at them, and Cai likes to fill whole galleries with hundreds of feet of them.