Hatsune Hatsune Concert Why does a person need two projectors? Is it to increase popularity?

This statement is not unreasonable. Actually, I saw it at Hatsune Hatsune 20 13 magic concert, and I can see it clearly in the video. In fact, all projectors are behind Hatsune Hatsune, mainly to prevent the overhead phenomenon when the characters move greatly. Generally, when the economy is sufficient, the projector is installed below the stage, so that even in a large audience on a low stage, the overhead state from bottom to top will not be seen.

If you have any questions, chase them.