Above the Shadow

There are no street lights in Nanwu Town. After sunset, no one looks down at their own shadows. After not returning home for ten years, "I" received a letter left by my grandma—— "Come back and close the shadow box." When my grandmother died, the coffin was too heavy to lift. The townspeople said it was because the shadow didn't follow. After returning to my hometown, I found that every house had a black painted wooden box. They call it the "shadow box." What's locked in the box is not a relic—— But "shadow". At night, I heard someone moving in the hall. Even if you don't turn on the light, the sound is still there. Turn on the light—— There is only my shadow on the ground. But it has six fingers. The old man in the town said: The shadow is not an appendage of the person. People are just shells of shadows. After sunset, shadows become heavier. Some shadows go home first, and some shadows no longer stick to the ground. And when the shadow starts to "talk", it means—— The door to the shadow world has been opened. I gradually discovered a more terrifying fact: Grandma is not guarding the box. It's "exit". And the black lines that are emerging on my wrist, Not a disease. It is the shadow that is "growing". When the shadow completely covers the body, Who's on top? Who's next? If light is just an illusion—— What is above the shadow?