The Chaos Void.
The Flying Boat piloted by Taiyi Overlord sped through it, drawing on the power of the universe.
Whether Overlords or Dao Ancestors, through their absolute borrowing and use of Great Dao Power, they could reach virtually every corner of a universe within a few years while inside it.
That included the Endless Starry Sky, whose expanse measured tens or even hundreds of billions of light-years.
But in the Chaos Void-
Unable to borrow the power of local laws, their efficiency in traveling plummeted.
Ancient God Peak spanned only a few hundred million light-years and had existed for countless eras, yet to this day, no Overlord dared claim to know that deadly region like the back of their hand.
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Thus, traveling from one universe to another could easily take several eras, dozens of eras, or even hundreds.
Even though the Taiyuan Universe counted as a central hub in this stretch of the Chaos Void, only after four full eras had passed since leaving the Xuanhuang Universe did Li Xian finally sense those peculiar fluctuations of a universe's "existence" again.
And that was with the World-Opening Overlord there to relieve the loneliness.
Unfortunately-
That World-Opening Overlord's own Heaven-Opening Art was not necessarily all that exquisite.
In fact, after witnessing Li Xian perform the Fission Heaven-Opening Art, he had actually thought of improving his Heaven-Opening Art as well, attempting to blast through the Wuxian Great Dao with an unprecedented World-Opening Secret Art, seeking life through death. In the end-
He had perished from the backlash of the Heaven-Opening Art.
An Overlord Secret Art-
Was not so easy to optimize.
Even Li Xian himself had failed to touch the fundamentals of the Heaven-Opening Art.
And with the World-Opening Overlord dead, there was nothing but the Chaos Void in every direction.