Since the high-density ray cannon could reach thousands of meters, the cannon could kill the monsters before they could threaten the coastal cities.
After a period of intense research and development, the high-density ray cannon was finally born.
When the black cannon appeared in the research institute, everyone was shocked by its power.
The cannon was black, and the muzzle was long and narrow, emitting a daunting aura.
"If the high-density beam machine gun is so powerful, then what kind of power can this cannon achieve?" an officer wondered.
Soon, the sea monsters attacked the coastal cities again.
However, under the coverage of the high-density ray cannon, the sea monster was firmly controlled near the coast.
The cannons quickly got into position and aimed at the sea monster, ready to unleash their might.
"Attention ahead! Attention ahead! Lure the sea monster eight hundred meters away from the coast!"
