A year ago, a strange phenomenon occurred in the world.
At first, people kept disappearing into unmonitored corners; later, entire buildings disappeared in place, leaving only bottomless holes; and finally, entire cities evaporated, like fistulas in the earth lying across areas once conquered by civilization.
No one knows where the disappeared people, disappeared buildings, and disappeared objects have gone.
Until this day, the hospital had tried every method but could not contact the outside world.
Purpose: People should persevere to the end in difficult situations