The Moon-Viewing Mirror could generate independent spaces. The quantity, strength and weakness of these spaces were all controlled by Ji Chen. Within her capacity, she could deduce endless amounts of independent spaces.
But all of these were based on the principle of mutual generation of the Five Elements. Without foundation, it would be impossible to build a skyscraper.
The Flame World that confined Lu Bei, belonged to the element of Fire within the Five Elements, and was a crucial part of the foundation.
Ji Chen had put in a lot of effort and made significant sacrifices to construct it. She was confident that it could confine cultivators of the same level, such as Zhu Xiushi. Even though she might not be able to refine them, it would be extremely difficult for them to escape from it.
Not to mention breaking the law with power and overturning the Fire of the Five Elements.
