The other mystical beasts within the Nirvana Secret Realm are unable to enter the vicinity of the Nirvana Pool.
If, when no one was in the secret realm, the beasts inside were to recklessly consume the energy from the Nirvana Pool to evolve, the Nirvana Secret Realm would no longer be sustainable.
To avoid such a scenario, the ancient and powerful predecessors who governed the Nirvana Secret Realm had set up certain restrictions around the Nirvana Pool, only allowing Beast Tamers holding a teleportation card to ignore these restrictions and enter the Nirvana Pool, thereby allowing their pets to absorb its power for evolution.
Thus, aside from Lin Su, there should be no other living beings nearby the Nirvana Pool at this moment.
Facing Qiuqiu, who was furiously charging toward him, a foreign term flickered through Lin Su's mind for a split second.
Contract backlash.
Feeling the still robust Guardian Beast Contract, he quickly dismissed this ludicrous notion.