The behemoth's rippling howl resounded throughout the dungeon. "Rippling" because players—or any humanly existence wasn't supposed to hear it's voice for that matter—weren't built to be able to clearly hear such a high pitched and loud voice.
But as a "Divine Beast," Seo Hana could, and extremely clearly at that.
Her ears rang while her consciousness felt like it was about it shatter like a thin piece of glass, she clenched her ears, gritted her teeth as she tried to endure the screech, of course, it was soon proved to be impossible, because the howl which was causing the reality to ripple, hence it was only natural that it wouldn't be silenced merely by closing one's ears.