In high-dimensional space.
In the vast expanse of Myriad Star Island, Xu Jingming, dressed in a black robe, sat leisurely on a rocky outcropping. In the distance, natural high-dimensional lifeforms tended to a medicinal field.
Now that I understand the method to establish a universe, what's next is to carry out trials, he thought. He concentrated, allowing his thoughts to manifest into an illusory realm. With a burst of energy, a universe was gradually born within the vast expanse of the illusory realm.
The entirety of it was an illusion that had no impact on the physical world.
A miniature universe formed within the illusion quickly. Although it was called a miniature universe, it was much larger than his homeworld, the Oohook Star Alliance, spanning over a billion light-years in diameter.
The illusory universe is very stable. Satisfied with his handiwork, Xu Jingming smiled and got up. I can open it up in my body next.