Nanto is known to produce good-quality bamboo, and they make traditional folk crafts out of the material. Due to its excellent elasticity, bamboo is suitable for composing smooth curved surfaces. For this piece, the diagram of black hole or worm hole, which is typically used in graphics, is blown up to a large-scale cubic form, celebrating the integration of tradition and technology, as well as hand craft and science. We have formed a gravitational field mode　in computer, and 3D-milled it out in 1:1 scale.The bamboo strips are woven against this form by the local art studio YitsunStudi led by Mr.YehJiShian.