After eight hundred years of development, Dome Turtle Island had long been fully developed. The yearly output of the island was limited and had already restricted the expansion of the Dome Turtle Zhao Family, simply put, there wasn't enough benefit to distribute among them all.
When benefits were insufficient, internal conflicts naturally arose.
The solution could be summarized in four words: increase income and reduce expenditure!
Reducing expenditure was akin to self-castration, which was not advisable.
As for increasing income,
for one, the Zhao Family's strength was limited, not even able to cultivate a Golden Core Master. Restricted by their strength and resources, the Zhao Family had hit a "steel wall" in their expansion efforts.
Only if a Golden Core Master emerged within the family could the Zhao Family undergo a second rapid expansion of power.