There were two difficulties in cultivating the Spirit Control Heaven Reaching Technique. First, one needed sufficient Law Power to support it. Second, one needed absolute control over that Law Power.
Since the former could be supplemented with Profound Heaven Spiritual Treasures, the cultivation requirement could be lowered to the Early Mahayana Stage.
However, even if one succeeded in cultivating a Profound Heaven Spirit Domain at that stage, it could not be maintained for long and thus had little practical value.
Fortunately, when Luo Hong began his secluded cultivation at Fu Ling Mountain, he had sent his Time Illusion Body to deliver the Small Sacred Tree into Old Demon Han's hands.
As a result, he had recently reforged the Life Creation Disk, greatly increasing his total Magic Power!
In a direct comparison, Luo Hong's current total Magic Power was even somewhat greater than that of an ordinary Mid Mahayana Stage cultivator.
As for the latter condition, almost no Mahayana Cultivator could meet it. Even those at the Late Mahayana Stage or even the Tribulation Transcendence stage could not!
This was because the cultivator first had to obtain a Profound Heaven Spiritual Treasure that suited their own Dao Path and was not weak in power.
Then, they had to pay an immense price to refine that Profound Heaven Spiritual Treasure until person and treasure became one, or completely comprehend its laws, before gaining sufficient control to use Law Power to construct a spirit domain!
Thus, for a Mahayana Cultivator to cultivate a Profound Heaven Spirit Domain was practically impossible!
But Luo Hong was no ordinary cultivator. The Great Dao of Primordial he cultivated allowed all Profound Heaven Spiritual Treasures to suit him, and during his previous three hundred years of secluded cultivation, he had completely comprehended the laws of the Sky Breaking