In fact, after the previous battle against Hai Dafu, Ye Weiming was very clear about one thing.
That is, the challenge of the second stage in these four instances has always stayed within their original settings, with their levels not differing too much. The only reason the difficulties of the previous and current challenges seemed so drastically different was merely because Ye Weiming, as a player, had become much stronger than before.
Therefore, neither "Blood-spurting Sword" nor "Longevity as the Heavens" posed any difficulty to him or YoYo before actually challenging the normal BOSS.
Ye Weiming distinctly remembered, at first when facing the level 45 Ao Bai, he and Yin Bukuai had gone through a tough battle indeed.
He had even prepared to slowly wear him down until he revealed his weak spot, but unexpectedly activated the tiny chance of an instant kill from "How to be Mount Tai", killing him with one strike.