Lin Mu's expression was serious upon hearing Senior Xukong's reply. He did not know how they would face this or how they would even find the invader. For all he could imagine, the invader could be hiding anywhere in this world.
Senior Xukong had explained to him before that as long as one has the access to a spatial dimension in this world they would be able to enter it as long as it was not anchored to a specific location. There were also certain restrictions such as that it could be entered from any place but could only be exited from a certain location.
There were far too many possibilities, and Lin Mu did not know which one it could be.
~Sigh~
'All I can do right now is to obtain more information, investigate and explore. I should eventually be able to find some kind of clue.' Lin Mu thought to himself.
Lin Mu's mind then returned to the current situation, and he started to think of the next question.