[3. Sky Curtain
The stars in the world have not changed in hundreds of years.
Even the study of astrology has disappeared.
When something exists for ten years, it's a novelty. For a hundred years, it's a historical story. For a thousand years, it becomes common knowledge.
The years go by, the sun and moon rise and fall.
People have long forgotten the true appearance of the sky and the trajectory of the stars.
They only know that the stars in the sky are always the same, only know that it is the unreachable sky, the untouchable firmament.
The sun and moon above, the stars among them.
The curtain that shrouds the world has never changed.
No one knows where it came from, and no one knows why it appeared.
Those who questioned it died, those who doubted it died, those who pondered it died; everyone naturally accepted it all.
Just like apples fall to the ground and people grow old and die.
Thus, the curtain of the firmament truly became the firmament.
