Centered around the concept of "cave", the mechanical design of the labyrinth theater incorporated the rare super-large linkage stage mechanical apparatus and devices of special effects, 3D and mobile giant screen. Jiahe was innovative in having dozens of elevators working simultaneously and diversifying special effects. The visual charm brought by mechanical art presented either on the ceiling or at the bottom, either on the interior or on the exterior of the Grottoes created a spectacular fantasy space, touching the audience greatly.