The Celestial Doctor couldn't help but feel a sense of powerlessness in his heart.
"Unless, I can master a power that rivals that of a True Immortal."
In the years since his awakening, the Celestial Doctor had already attempted to do just that.
One was to study the remnant True Immortal forces that permeated the Star Sea.
From it, he learned some True Immortal Seal Characters.
It could be considered that he had mastered a few killer moves. But it did hardly anything to enhance his own strength substantially.
The second was to borrow the power of ancient Immortal Instruments.
The Xuanhuang World has a profound heritage, and it's even said that before the demise of the Immortal World, many sects maintained contact with the Upper World. If the Immortal World were still around, the Heavenly Law Realm probably would not be a match for the Xuanhuang World.
Fortunately, when the great war broke out, it had already been some years since the fall of the Immortal World.
