With almost no weight, Long Bo changed to carrying his bag and flew down, flapping his wings.,Stepping inside, you find a wide, metallic corridor. The passage has weathered the countless years, rusted and worn. On its walls are arrow markings etched with the sap of unknown plants.,Longbo had a strong sense of crisis. In the next three days, besides hunting for food and sleeping, he spent all his time digging a hole. It was planned, winding, and stair-like, digging deeper into the rock layers.。