To have a Peak Dao Integration Realm cultivator say to his face, "So this is the Heaven Opening Realm," was the greatest mockery of Lu Ji.
Back when Lu Ji had been in the Dao Integration Realm, he had actually condensed the four subordinate rules of Earth, Water, Fire, and Wind. At that point, he only needed to advance a little further to break through into the Heaven Opening Realm.
But the Heaven Opening Realm was not something one could definitely break through to merely by condensing the Earth, Water, Fire, and Wind subordinate rules.
Take someone like Yu Wuheng, in the Dao Integration Realm Late Stage. He was only a thread away from the Peak Dao Integration Realm, yet that single thread had blocked who knew how many Dao Integration Realm Late Stage cultivators.
The barrier to the Heaven Opening Realm was only more difficult than breaking from the Dao Integration Realm Late Stage into the Peak Dao Integration Realm. Or rather, the two were simply not comparable.
Lu Ji had wanted to rely on his own strength to break through to the Heaven Opening Realm, become the strongest in the Black Stone Domain, and lead the Abyss Clan in overwhelming the entire Black Stone Domain.
But Lu Ji had failed. Not only had he failed to forcefully break through to the Heaven Opening Realm, he had also injured the origin of his body.
After wasting several years, Lu Ji attempted another breakthrough. The result was still failure, and this time, his injuries were even worse.
After that attempt, Lu Ji had completely lost all hope of breaking through to the Heaven Opening Realm, unless he found a supreme healing treasure capable of replenishing the origin within his body.
But how could a Dao Integration Realm cultivator like Lu