Protected by the old man, Wuchen and Su Weiwei spent a month in seclusion within the Space before emerging, having used Dual Cultivation during this time to further raise their Cultivation Base.
As their minds and hearts beat as one, they simultaneously comprehended a grand rule of the Dao during their spiritual communion in Dual Cultivation. This was the realization of how to perceive the spiritual essence of all matter in nature, communicate with it using their Divine Sense, and then borrow its energy to aid themselves. A blade of grass, a tree, a stream, a Spirit Stone, the direction of the wind, an animal... As long as one's Divine Sense could resonate with it, one could wield its energy. This was also immensely useful for beast-taming techniques and the Spirit-Word Technique, allowing them to amplify their power to the point of acting on pure whim and will. The two named this comprehended Dao the "Resonance Rule."
Upon emerging from seclusion, Wuchen and Su Weiwei eagerly wanted to test the newly comprehended Resonance Rule. They came to a lush forest, and Su Weiwei tried using her Divine Sense to communicate with an ancient tree.
Chapter 78