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Chapter 111 containment breach
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Chapter 113 Dangerous
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... ll of the well, there are corridors on each floor spiraling downwards. You can see the first floor and the fifth floor when you lie on the railing.
In the research institute, only the main stairway can go up and down, extending from the surface to the negative tenth floor.
Besides the main stairway, there are only elevators from minus one to minus five, and elevators from minus five to minus ten, and the two elevators are not connected.
Among them, minus one to minus ...
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