Chapter 140 Wish You Stay Kind

• The underground tunnel was pitch-black, but Dr. Yang had switched on a work light ahead, so it was bright enough. Rock lined the tunnel walls, solid as bedrock. Robots had dug it wide. An adult could move forward with a stoop, no big deal.
• It started uphill, and after a few hundred meters, it sloped down.
• At the next turn, the tunnel suddenly opened up—a flat space of roughly five or six square meters.