Late one April night, the artist Liao Wen was in her studio in the southern Chinese city of Shenzhen, listing off the many instruments that she uses to make her astonishing art. “These are my chisels,” she said in a video interview, panning the camera about. “Chisels, chisels, chisels. The wood saw. So many tools, accessories, so many machines, sandpapers.” It was a veritable hardware store of supplies, and she was in the midst of packing them all up (not an easy task) to move with her husband across the…