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Chapter 18 Under the black army mercenary group
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Chapter 20 Plague on the nest
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... untless species. The mountains span the southwestern edge of the continent and become a natural trap in the southwest to the interior.
There is a high-speed railway in the middle of the mountain. The high-speed railway tunnel is 12,506 meters long. It is affected by a variety of unfavorable geology. The construction of the tunnel is laborious and costly, and it is called the Class I risk tunnel.
The entrance of the tunnel is a circular hole made of concrete. The edge is convex from ...
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