Alex continued his conversation with Nelson and the others without knowing. Even though there were Nano and Noel on the Northern Continent, no N squad in that ship, so no one would know the fate of Song Yu.
Hearing Nelson's reasoning, Alex could picture that there should be a few Martial Monarchs that brought so many people. If they killed a few while sparing one or two, they would inform the sect and request reinforcement. Seeing a thousand disciples becoming hostages, the sect would surely make a move.
"In case they are bringing more people and getting killed by us. They would surely send another wave because their face wouldn't let a mysterious influence like us attack them... or at least allow us to escape unscathed. They want to show dominance against us." Alex said calmly. "In that case, we can find some places for a base where we can destroy them easily by putting traps and other things."