The Person Who Changed the Spiritual Cage and Mana

The background is based on the spirit cage, with some settings modifications. The author is a novice, please bear with me if my writing skills are low. The explosion of Mana ecology is squeezing the living space of mankind. Some people choose to escape from the universe, some people have no choice but to survive, some people give up on themselves, and some people choose to adapt to Mana! Transform Mana! A traveler from another world named Zhang Jiao is taken in by the kind-hearted Bai Yuekui, and together with Bai Yuekui and others, they continue human existence and rebuild a new home!