Yang Yi could think of the worst result. He agreed with Ghost.
"I suspect that in the end, we humans will lose everything except for the fortress built in the core parts of the city to protect the city."
After saying that, Yang Yi pointed at several places on the map of the human city.
There were fortresses on the ground connected in series at these places.
However, the defensive power of the fortress on the ground was much weaker than that of the fortress under the ground.
This was because the dark insect race could also destroy the buildings on the ground.
However, the dark insect race could do nothing to the underground buildings.
The ability to breathe of the dark insect race would decline if they drilled into the soil.
Therefore, the fighting ability of the dark insect race would decrease accordingly.
The deeper they went into the soil, the greater the ability of the dark insect race to lose.