Chapter 301: Keep pace with the times and improve territory defense

Third, as the territory expands, the depth of the strike array continues to extend, far beyond the original scale. In the future, this scale will be built larger and larger, but its essential effect is still the same.

For enemies that can be blocked, a few death corridors and arrow towers can easily deal with them.

Facing ancient creatures and air forces that cannot be blocked, even twenty death corridors and dozens of arrow towers are useless. The cost of building mechanical walls, speed bumps, supporting arrow towers, etc.