"The Immortal Realm is also trying to open a passage to the Primordial Forbidden Zone?"
Su Yun froze, then immediately understood Di Feng's purpose in coming to the Primordial Forbidden Zone last time. "Di Feng came here before, most likely to build a gateway from the Immortal Realm to the Primordial Forbidden Zone, making it easier for the Immortal Realm to explore it!"
Too many places in the Primordial Forbidden Zone were the remains of the former Immortal Realm. The truly useful places lay beyond the Immortal Realm. If one started from the Fifth Immortal Realm, an ordinary immortal would likely need thousands of years to reach this place.
Not everyone had a Bronze Talisman, nor did everyone know that the Tomb of the Three Holy Emperors contained a secret passage.
However, if they spent a great sum to construct a Heaven Gate connecting the First Immortal Realm and the Sixth Immortal Realm, immortals from the Sixth Immortal Realm could swiftly travel between the two realms!
Presumably, there was another equally majestic Heaven Gate in the Immortal Realm, standing within the Immortal Court, the two Heaven Gates linked to one another!
Di Feng had not personally explored the secrets of the Primordial Forbidden Zone. First, it was dangerous; second, he still had enemies such as the Empress and the Evil Emperor. Thus, sending immortals from the Immortal Court here to risk their lives was his best option.
Even if danger arose, those who died or were wounded would not be him. At the same time, he could keep the Empress, the Evil Emperor, and the others occupied, leaving them no time to covet the Primordial Forbidden Zone.
Yet this was the First Immortal Realm, a world that had long turned to tribulation ash. The Great Dao no longer existed here.