Of course, there was nothing there.
However, Ye Feng had mastered the Space Transfer Rule and was naturally extremely sensitive to spatial fluctuations.
He could detect that there was something off about that particular space node.
Ye Feng wasn't sure how long the Forbidden Area Masters, intimidated by his might, would remain fearful; they might reopen the forbidden zones in just a few days.
But he couldn't stay here forever, so after contemplating for a moment, Ye Feng quickly moved to the edge of the forbidden zone.
There were some marine plants there, and his gaze searched around, quickly settling on a piece of kelp that had reached the Third Order.
He directly utilized his newly acquired Natural Domain and transformed the kelp into a tree person.
Then he transferred the tree person near the portal, so that whenever the portal opened, he would be the first to know.