How much does it cost to build a wedding banquet hall with 400 square meters of 3d holographic projection?

The space of 400 square meters is only the venue, and the holographic projections are all on the wall, so the height of the floor will have a great influence. The height of a three-meter projector is quite different from that of a six-meter projector. When Huace Culture Technology makes a holographic wedding plan for the hotel, it will determine the price according to the specific height, stage size, brightness, number of projectors, film content, central control system and so on.