Lin Yi opened the talisman letter. After reading it, he could not help raising an eyebrow slightly.
This letter was not written in the Source Realm's script at all. It was entirely penned in the long-lost secret language of the Ancient Domain, making it extraordinarily confidential. Other than those who had come from the Ancient Domain, likely no one could decipher it.
It turned out that Yuanshi had quietly broken through within Star Constellation Academy more than twenty years ago, steadily stepping into the ranks of the Emperor Realm.
Compared with Lin Yi, Yuanshi was even more attached to his homeland in the Ancient Domain.
After entering the Emperor Realm, Yuanshi's only obsession had been finding a way home and returning to the Ancient Domain.
For that reason, he had specifically traveled to Ascension Iron City, which had once connected the various Small Worlds, and remained there for more than ten years.
Following the trail of Dark Mist Realm's invasion of the Ancient Domain, he traced it back to its source and exhausted every means of deduction and investigation, yet he had never managed to grasp the Ancient Domain's spatial coordinates.
Afterward, he used his supreme star divination ability, draining his strength to calculate the trajectories of heaven and earth. Yet the Ancient Domain's traces remained utterly void, impossible to locate again.
The Source Realm was vast, with countless large and small subordinate worlds under its jurisdiction.
Other than worlds originally rooted within the Source Realm's Tidal Spirit Sea, the overwhelming majority of Small Worlds had become spatially bound to the Source Realm only after forming connections with the Dark Mist Realm and suffering its erosion, allowing them to be attached to the Source Realm's system.
It was precisely for this reason that the Source Realm's Ten Great Main Cities