Bibes was even worse off than Huo Man; his heart nearly stopped beating because he clearly understood what the scene before his eyes meant.
From Huo Man's perspective, what he saw was the Monarch dueling two Mourning Undead Soldiers and killing one of them, unaware that one had previously left alone.
How could anyone duel two Mourning Undead Soldiers by themselves? Even killing one is difficult, as these are beings comparable to Gods in high-end combat strength, nearly invincible in close combat.
While there are some Ultra God Sword Saints who could restrain a Mourning Undead Soldier, defeating them is difficult because they possess Undead souls that are enduring and sturdy, making them impossible to outlast.
It's difficult enough to defeat one on one, not to mention one against two. Thus, under the protection of two Mourning Undead Soldiers, they boldly entered the territory of the Friel Empire, daring to camp in the unfamiliar Plane.