Within Dan God's Cave Mansion, Lin Yi saw the slowly appearing figure of Zhang Dao Xuan, who seemed to be unharmed, but he could sense the flickering deep within his divine soul, like the flame of a candle, which could be extinguished at any moment.
From this situation, it's feared that Dan Immortal himself encountered a life-and-death crisis, having sustained great damage. Otherwise, this separated wisp of divine soul wouldn't be so unstable.
If it were a Primordial Spirit split from the Refining Void Realm, its connection to the original body wouldn't be so deep. Even if the original body died, the Primordial Spirit could still survive, unlike the divine soul, which is tightly linked to the life and death of the original body, just like the Soul Lamp in the sect—even if the owner of the Soul Lamp perished, the Soul Lamp would go out.