Introduction to modernist sculptures: The Sofia Museum of Modern Art is one of the centers of modern art in the world, and other modernist works of art are displayed in the museum. These works are best described as "unbelievable". Some are made of plastic pipes spliced together to form huge skeletons, like dinosaurs or beetles, which can actually walk on the ground. Some look like giant lobsters, some look like long-tailed whales, and some are made into three-dimensional kites, which can make sounds when hung in the air. Some exhibition rooms only have blank screens. When the audience walks in, the shadow is projected on the screen. With his movements, the work is produced. Each movement can be printed out and signed by the author and the audience. This work is complete.