The next day, the Guixu Immortal Alliance began making preparations to merge the three grotto-heavens.
With more than forty Heavenly Immortals from the Guixu Immortal Alliance assisting them, merging the three grotto-heavens was not especially difficult.
They spent tens of thousands of years continuously setting up formations within the three grotto-heavens. Then, drawing upon the power of the Heavenly Dao Source Artifact, they brought the three grotto-heavens together as one, ultimately elevating the Guixu Grotto-Heaven to the rank of a supreme-grade grotto-heaven.
Throughout this process, the Heavenly Immortal mighty figures of the Demon and Divine Races did not come to interfere again.
There were two fundamental reasons. First, when Azure Lord attacked, the Demon and Divine Races could block Pure Yang Ancestor and the Grand Void Sword Master; likewise, the human race's mighty figures would also intervene to stop them.
Second, Chen Nianzhi's combat strength was extraordinary, and he had refined the Heavenly Dao Source Artifact.
Any Heavenly Immortal mighty figure who refined a Heavenly Dao Source Artifact could wield combat power comparable to an Ancient Immortal.
Chen Nianzhi's physical body had already been comparable to that of an Ancient Immortal mighty figure. Now that he also had the Heavenly Dao Source Artifact's support, his strength was at least comparable to a Two Tribulations Ancient Immortal.
Most importantly, having refined the Heavenly Dao Source Artifact of the Guixu Heaven Domain, Chen Nianzhi could receive the support of the entire West Qi Divine Abyss Sea as long as he remained within it.
On one's home soil, the Heavenly Dao Source Artifact's enhancement increased severalfold. Such support was simply too powerful. Unless Four or Five Tribulations Ancient Immortals acted personally, Chen Nianzhi was already invincible.
Under such circumstances, naturally no one was willing to take the risk of provoking Chen Nianzhi.
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