Even at their speed, they couldn't quite catch up.
"Should we continue the pursuit?" Kunpeng Ancestor said solemnly, "Even if we find that city, we can't take action because if we alert those people..."
The others remained slightly silent.
Yes, these Pure Blood Peak Divine Beasts couldn't act against the Dark Realm!
If they did, they could potentially awaken some terrifying beings of the Dark Realm.
Those terrifying beings are still in a dormant state, but their interference would expedite their awakening.
As for the reason, it relates to the ancient battle.
The reason the gap between Pure Blood Peak Divine Beasts and other Divine Beasts is so great, apart from their bloodline, is that Pure Blood Peak Divine Beasts retain the bloodline of ancient peak powerhouses.
It's said that in ancient times, there were many powerful beings above the Ninth Rank!
And these Pure Blood Peak Divine Beasts carry such a bloodline.