Both had reached the ultimate level and made the final leap, attaining the End-of-the-Road Immortal Emperor realm after the Empress and Wu Shi.
The moment they attained it, they were already close to the pinnacle of this realm. The Dao Fruits of two End-of-the-Road Immortal Emperors resonated, producing an effect similar to how The Sage Who Transcended Samsara condensed a Dao Fruit Prototype through the positive and negative Great Dao.
Upon entering this realm, one possessed an invincible body!
Boom!
The ancient, unadorned giant tree standing deep within space-time and silently supporting the operation of Heaven and Earth suddenly bloomed with divine radiance that filled the skies. It drew upon the essence qi and Origin of the entire system of countless universes within the many Sea of Boundaries. Endless divine power surged back and forth like rivers, constantly inhaled and exhaled by it as it underwent a deeper interaction with the World Tree...
The rules and order of all worlds were undergoing subtle changes and integration.
The birth of another End-of-the-Road Immortal Emperor added another measure of foundation to the Unique True Realm.
In this process, every universe throughout the Heavens and Myriad Realms received tremendous benefits. The Heavenly Court benefited even more greatly, its location becoming increasingly radiant, like a supreme divine sun illuminating the entire Nine Heavens and Ten Earths system in every detail.
The three words "List of Gods" grew ever more resplendent. With another Emperor restored to his peak, this supreme divine artifact also returned to its peak state.
The Fruit Position of Emperor Ziwei, representing Heaven's lesser sovereign, was restored to its peak. He too was an End-of-the-Road Level living being.
Another End-of-the-Road Immortal Emperor Dao Fruit merged into Ye Fan's Great Dao, and the light of the Zhou Tian Stars shone upon his imperial