This footage was filmed and produced 5 January 2023,

A holographic projection screen is displayed on the wall of the floor passage of the Bell Tower subway station in Xi 'an, Shaanxi province, China, January 5, 2023.

A two-story structure with a clock tower landscape model and a holographic projection screen presents the ancient architecture with modern subway technology. The lower layer forms a holographic projection through the Led screen at the top and the refraction layer in the middle, which displays the urban appearance near the bell tower and the underground space structure and dynamic images of the bell tower station with abstract lines. The upper part is a miniature bell tower model with a ratio of 1:30 by 3D printing technology. On the background wall, symbols of Xi 'an's representative urban architecture and characteristic shapes are hollowed out and stacked on the bottom plate, making the picture simple and full of three-dimensional sense.