Although the space within Guixu was extremely vast, and it had indeed preserved many remnants of war, they had never found anything describing that world.
The only thing they could be certain of was that it was an immensely powerful cultivation world, and that it used the same written language as the Primordial World.
The term "foreign race" had become taboo precisely because of the discovery of Guixu. Compared to the overall strength of that world, the cultivation world of the Primordial World was simply too weak.
If there were a passage that could connect that foreign domain to the Primordial Universe, the Primordial Universe would probably soon become an appendage of that foreign world.
The gap in strength was simply overwhelming. The Primordial Universe would have no power to fight back at all!
Because he had realized the enormity of this danger, Dao Ancestor Hongjun had classified the term "foreign domain" as taboo.
Two figures appeared within Tongtian's field of vision!
They looked somewhat furtive. Their auras were completely different from those of ordinary people from the Primordial World, but judging by their appearances, they seemed to be disciples of the Western Teachings.
Sect Master Tongtian was somewhat surprised. Although he had never held a favorable impression of the Western Teachings, he knew that the Western Teachings did not have such strange disciples.
These two people, who looked like disciples of the Western Teachings based on their attire, were definitely hiding some secret. Their identities were probably far from simple.
The two had already slipped beneath the churning surface of the sea!
Tongtian followed them unhurriedly. After diving for a while, he entered a deep canyon beneath the seabed.
This canyon was protected by a formation. The one who had set it up was Dao Ancestor Hongjun, whose purpose