The outer area of the city had been set up with barbed wire to prevent monsters from breaking out of the blockade.
In addition to the old-fashioned barbed wire, there were all kinds of instruments and equipment to monitor the situation 24/7.
The aircraft would fly over the city from time to time, and when they discovered traces of monsters, they would launch an attack from the air.
However, these monsters reacted extremely quickly. Every time they discovered the traces of the aircraft, they would quickly hide, so the effect of the air strike was minimal.
At this time, in the military camp outside the city, there was a group of valiant soldiers and a dozen cultivators who were emitting energy fluctuations. They were gathered together to discuss the plan of action.
The best way to destroy the monsters was to raze the entire city to the ground and then kill all the monsters.