A New World

Deep in the hearts and minds of everyone on the earth, there is a "door" to the new world. The new world is rich and splendid. There are no deserted lands, no monsters, no infections... Children are happy, and adults are happy. People yearn for that world, eager to open the door in their minds and hearts and enter the new world. But this door lacks a "key" and has not been opened for a long time. I don't know who holds this "key" and when will this door to the new world be opened...