C280 Using the Ground as a Brick Bed
As the rookies left, Xue Lang looked around, pointed to a mountain root and said: "From here on, ten people will form a group. Every five meters, there will be a pit. Each pit is ten meters wide and five meters deep. Five meters from the ground of the mountain root, let's begin!"
Digging a cave?
All the team members and veterans paused for a moment, and then they understood