After Tie Long left, Su Yu did not immediately take action but carefully sensed for a moment.
He discovered that he could sense Tie Long's location at this time.
Tie Long, having fought with Su Yu for a long time earlier, had his body stained with his Ghost Energy.
Now this Ghost Energy had evolved, possessing an activating trait, becoming some sort of marker.
Even from a distance, it could allow Su Yu to sense Tie Long's location.
Su Yu sensed that after Tie Long left the Radiation Land, he did not immediately depart but found an open area to sit and recover from injuries, seemingly waiting for Su Yu to come out.
Su Yu nodded and felt slightly relieved.
He was worried that Tie Long might not mean what he said, appearing enthusiastic while holding a grudge, and after leaving the Radiation Land, would destroy Mechanical City, which would be troublesome.
Fortunately, nothing of the sort happened, and Tie Long behaved quite honestly.
