Why the architectural structure of "Water Cube" comes from the concept of soap bubble accumulation.

Because to create the feeling of water molecules, each air cushion is an irregular polyhedron, so the steel structure supported by air cushion is also required to be a multidimensional 12 polyhedron or 14 polyhedron. This kind of steel structure is the first time in China and even in the world. The skin of "Water Cube" consists of more than 3,000 air pillow bubbles made of irregular ETFE films. Because the air cushion is translucent, birds will not stay on it, and the edge of the air cushion frame on the roof is also equipped with extremely thin steel wires to prevent birds from damaging the air cushion. Inside the venue, spectators can only get close contact with the air pillows in the bubble bar of 170 square meters, and other areas are not allowed to touch. "Water Cube" and "Bird's Nest" constitute the unique landscape of "People's Olympics".