In the Sanmenxia section of the Yellow River, 127 meters deep under the water, there are eighteen layers hidden.
My grandfather has been guarding the gate all his life. He went down to inspect the well three years ago and never came up again.
My dad took his place and disappeared behind that iron door on the same day three years ago.
The gatekeepers have passed down the three rules for three generations, and I have memorized them since I was a child.
First, we go down to the well for inspection at three o'clock in the morning every day and must come up before four o'clock.
Second, the iron gates on each floor can only be seen or opened. If you hear someone calling your name from inside, you must not answer the call.
Third, the door at the bottom of the 18th floor must never be touched.
I kept guarding it for three years without even daring to take a second look at what it was like under the well.
Until early that morning, I heard my grandfather's voice coming from the bottom door.
He's calling my name.
One after another, clearly.
I broke the rules and opened the door.
Then I realized that there was something more terrifying than death hidden in the eighteenth floor.
