Ji Ning and the others didn't dare to cause the slightest disturbance, for fear of drawing the attention of the 'Daolord' they suspected of being behind this Sacred Immortal Realm. Right now, they had the advantage of stealth. Once they were discovered, things would become difficult. This Sacred Immortal Realm was someone else's territory, after all. There had to be many formations protecting it.
For example, that local branch of the Bluegrass Sect in the Brightshore Kingdom was only staffed with weak World-level cultivators, but they were still able to trap Ning thanks to the grand protective formation! A Daolord's lair was an incredibly dangerous place. There was no such thing as being too careful.
But of course, Ning's group was fairly confident. Generally speaking, they wouldn't be worried about weaker Daolords at all.
Swoosh.