Duanmu Fu knew that the man opposite him was not a bit weaker than himself, so he went all out from the start, exploding to the pinnacle of A-level intermediate strength in an instant. The rapid release naturally left a faint afterimage beside Wu Youyou.
Leaving an afterimage, many top A-level experts might not be able to achieve such a feat. The fact that Duanmu Fu, with his A-level intermediate strength, left one showed just how exceptional his talent was.
It was this unrestrained strike that even an A-level peak expert would need to temporarily avoid, as taking it head-on could likely lead to disadvantage.
However, even though Duanmu Fu had used all his strength, even though he had left an afterimage in place, what he faced was, after all, a true martial arts Great Grandmaster.