It was the authority of a Sector Lord! Song Shuhang and Sage White had actually managed to create something like this, and two of them at that!
This was a qualification that even Immortal big shots rarely obtained!
The myriad worlds were so vast, and there were quite a number of Immortals who had survived since the Supreme Ancient Immortal Realms. However, the number of Immortals who had the authority of a Realmlord did not exceed ten, or perhaps even less. It was unknown if there were even five!
Sector lord authority had the effect of avoiding calamities, many cultivators knew about this. However, this function had never been used since ancient times.
After all, the ones who truly controlled a world were basically all Immortal big shots. After they had the authority of a Sector Lord, why would they even need to undergo tribulations?