Hundred Million Billion Years

Setting aside all other factors, the intrinsic essence of the Fifteen Immortals of Yuan Tian increased by roughly fiftyfold every year.

True Immortals no longer needed resources. Their energy reserves, "Dao Source," were created from nothing within their bodies. To increase their strength, they only needed to comprehend and replicate Dao Principles. No matter how high their true essence became, it would not affect this point.

In the year 7587, in the foreseen future—that is, two and a half years from now—the Fifteen Immortals of Yuan Tian worked together, coordinating the Dao Principles they had comprehended. Combined with the brute-force advantage brought by their high essence, they forcibly tore open the shell surrounding the Bai He Universe.

Since this existed only within a segment of the future, you carelessly had all fifteen of them bring you into this small universe.

From the outside, this universe looked no bigger than a football. Only after truly entering did you discover that its interior was quite vast... Well, not all that vast—less than one light-year across.

But it was, without question, a universe.

Specifically, all Fifteen Immortals of Yuan Tian felt their Dao Fruits reduced to their initial power. The Light Dust Source Soup Dao Principles they had originally replicated all dispersed, and they had to leave this small universe to recover them.

This universe was simply too small. With the slightest expansion of their spiritual senses, they could touch its borders. Its cosmic wall was only a few hundred kilometers thick, not even comparable to the Yuan Tian Realm Wall. It was practically a joke.

One more thing: the instant you entered, you too felt yourself being weakened.

For the fifteen True Immortals, the Dao Principles replicated onto them vanished, but their own Dao Fruits remained. Factoring in their essence, they still