Sun Wukong and the True Martial Great Emperor flew over the black sea enshrouded in thick fog, below which black water churned, constantly raising huge waves.
They first passed the Ice-Fire Island where they had surrounded Liuer last time, then delved deeper into even more ominous territories.
The Northern Dark Sea was far more than ten thousand miles in radius, and due to its complex terrain, it was scattered with numerous islands and solitary mountains; without precise information, it would be difficult to thoroughly investigate the area in a short amount of time.
However, Sun Wukong had already learned about the situation in this area from the Myriad Saints Ancient Dragon, and though he was not clear about the distribution of the demonic cult's forces, he knew roughly where their stronghold was located.