This strength could only allow these smaller factions to hold onto their own territories.
If they wanted to expand further, they simply lacked the power to do so.
A Human Immortal could only occupy one country, based on the tacit agreement framed by the current reality.
Without more Human Immortals, even if you could seize a territory, it would end up like the Changqing Branch in Youxin Country which could hardly be defended due to the lack of Immortal-level martial power.
In the end, it would result in continuous warfare, becoming a place for the sect to bleed continuously.
Thus, only sects with more than two Immortals or demon nations had the surplus resources and strength to occupy more territories.
Coincidentally,
In this Southern Domain, there were exactly two Immortal Sects, each possessing two Immortals.
One was located in Anyu Country to the southwest, known as Jintai Gate, and the other adjacent to Youxin Country, situated in Youshan Country at Xuan Turtle Mountain.