The Floating Immortal Island within the Void Heaven Mirror had been obtained from the Land of Divine Ruins Forbidden Area back when he was in the Qingzhou Cultivation World.
Hidden upon that island had been the Divine Soul of a crippled immortal, one seemingly from beyond this domain.
In the end, that crippled immortal's Divine Soul had battled a being that had crossed domains from a place beyond this realm, seemingly called the Blood Origin Realm. Both sides had suffered grievous losses, allowing Zhang Qingyuan to reap the final benefit.
After reading the records left behind by the crippled immortal's Divine Soul, Zhang Qingyuan learned that the Floating Immortal Island had been formed from a grain of dust that had fallen into the mortal world from some Celestial Court of the Upper Realm.
A Celestial Court, a speck of dust, falling into the mortal realm...
The vast secrets hidden within—
Zhang Qingyuan could not imagine them.
Yet instinctively, he could sense that this Floating Immortal Island was a good thing.
After all, five thousand years ago, an unknown existence from the Upper Realm had struck across the void, destroying millions of li of land in northern Qingzhou. Nothing but a chaotic wasteland had remained for thousands of years, forming the Land of Divine Ruins Forbidden Area that the Qingzhou Cultivation World dared not speak of.
Yet at the heart of the Land of Divine Ruins Forbidden Area, this Floating Immortal Island had remained within the chaotic currents that filled it.
The fact that it had remained unharmed in the Land of Divine Ruins Forbidden Area, a place even Heavenly Human-level experts could not easily cross, was enough to prove its extraordinary nature.
Thus, before leaving, Zhang Qingyuan had directly used the Void Heaven Mirror to store the Floating Immortal Island