Why Is My Wife the Protagonist in My Rebirth?

In the field, tens of thousands of small hands constructed out of thin air inserted rice seedlings into the soil; the phantoms of cars appeared on the assembly line, and finally turned into entities as the imagination factors were filled; between the buildings, accompanied by the roar of "Illegal travel, stop quickly" coming from behind, white ropes were flying with figures one after another. Shi Shan opened his eyes and was reborn in a world built by imagination. Just as he was imagining the future life of the protagonist, things beyond his cognition made him slowly discover that the protagonist was my wife...