At the cost of slightly decreasing the might of the Array Technique, in hopes of operating it with a tad less energy.
There is a distinction between Immortals and Mortals; Li Fan lacked the means to create Celestial Spiritual Power on a large scale. Even if he could obtain some from the Great Heavenly Sovereign's legacy, it wouldn't suffice to support the plans for this lifetime of Li Fan.
However, the Essence of Source Power, which is infinitely close to Celestial Spiritual Power, appeared almost exhaustless to Li Fan.
Should he manage to operate the Immortal Array with the Essence of Source Power, it would undoubtedly save much trouble.
Even if the Law Transmission and the Celestial Doctor returned to the Xuanhuang World, he could still easily take control.
It was no longer necessary to laboriously create a Saint Emperor's Avatar and then contend with it.
