Above the sea, in front of the giant city.
Liu Yan was observing the city. Then, he saw the main gate slowly open.
Liu Yan's face immediately turned serious. Even though he had been in stealth mode, he still had to be careful. He retreated into the white fog.
Although his vision was affected by the white fog, he was still at the edge of the fog and could still see the main gate.
Liu Yan completely suppressed his aura and concealed himself as much as possible.
Usually, Liu Yan's concealment ability was exceptional.
However, this was a higher-level territory, so there must be higher-level buildings.
The current level 2 guard tower in the Origin Territory already had powerful detection abilities.
If there were higher-level buildings in this high-level territory, there might be detection methods that could see through invisibility and stealth skills. Hence, Liu Yan had to be careful.