Charlene walked to Fang Heng's side and whispered, "It's a poisonous gas that the spawns discovered in their research. It can cause extreme damage to the virus, but it only targets the form of the infected spawns. Moreover, the virus is constantly regenerating, so this virus can't be used as a conventional weapon."
In fact, Charlene had seen the battle information between the spawns and the mutant worms in the past. The spawns had developed several weapons to deal with the mutant worms. Unfortunately, the mutated worms' self-evolutionary ability was too terrifying!
In the beginning, targeted weapons were very effective. However, after experiencing a few large-scale battles, the mutated worms relied on their powerful mutation ability to quickly complete their self-regeneration and mutation and soon evolved resistance to the poisonous gas.
As a result, in the later stages of the war, the spawns rarely used poisonous gas on large-scale battlefields.
