In Brave Continent, Twilight City was the foundation of Twilight City. Returning to Twilight City put them in an invincible position.
There were over 15 major districts and 300 main cities in Brave Continent. If they didn't have Twilight City to rely on and if they offended a guild like Peerless Heaven, everyone could still make a run for it even if they couldn't defeat them. In fact, it wasn't as though the Quan Zhen Sect hadn't done anything like that.
However, the entire Immortal Island was merely half the size of Brave Continent. Additionally, the Quan Zhen Sect came over by taking a ship so if the enemies destroyed their ship, there was basically nowhere for them to run in such a small place.
No matter how impressive Wang Yu was, he was still not Super Saiyan, right? How could he possibly slaughter an entire island of people by himself?
