C815 The Arduous Tug of War.

Suddenly, a few hazy figures flew out from behind the hill controlled by the Ground Coalition!

"What the hell is that thing?!" The commander of the Underground City's army exclaimed, "Didn't the Surface Beings' aerial truck get destroyed long ago?"

"There's more than just the aerial truck there! There's also a helicopter with a propeller! It's a military helicopter! Where are our air-defense