If the soul tools on the Howling Wind Formation could not blow away the poisonous fog and toxic rain, they would be in serious trouble.
What astonished the Vice Commander, however, was that these rotorcraft did not choose to spray poisonous fog as they had expected.
A trump card was most intimidating when it had yet to be revealed. Once a tactic had been used, it no longer possessed the element of surprise.
Besides, did they really think the poisonous powder from the Jade Scale Nine Absolutes Flower was so easy to obtain?
The poisonous powder used in the previous city defense battle, as well as the powder Huo Yuhao normally used, had all been accumulated over more than ten thousand years by the Jade Scale Nine Absolutes Flowers outside the Ice and Fire Yin-Yang Well!
Although a little remained, it was absolutely not enough to supply several thousand unmanned rotorcraft.
Thus, Huo Yuhao had never intended to continue using the tactic of spraying poisonous fog.
As one of the first people to venture into unmanned soul tools and Mental Power-controlled soul tools, Huo Yuhao had new tactics.
Only Huo Yuhao could have conceived of such tactics, and the reason was simple.
The uncharted blank spaces between established scientific disciplines were where the greatest achievements could most easily be made.
Likewise, the intersections between two fields were where the greatest achievements could most easily be made.
Huo Yuhao was precisely the person who had dabbled in both unmanned soul tools and military warfare, and could combine them.
"Screech—"
An even sharper, harsher, more ear-piercing sound than that of the rotorcraft rang out. It was not produced by one or two rotorcraft, but released simultaneously by thousands of unmanned rotorcraft.
What was the greatest advantage of fighting in the realm of