Guan Yan informed Xiaofan that the source of Yan Xiao's power was resentment, and to weaken Yan Xiao, the heads it devoured couldn't carry any resentment.
The dead needed to be calm and indifferent, but how was that easy to achieve?
Throughout the ages, death has been the one great difficulty; the fear of death and clinging to life are human nature, which is why those who face death with composure are celebrated.
Sacrifice, after all, is rare.
However, the "Offering" of the Senhai Holy Clan was precisely the reason why Yan Xiao grew so quickly in reality.
Because the "Offering" of the Senhai Holy Clan was never a voluntary sacrifice, it was always an "offering of someone else's head."
Through Xiaofan, Guan Yan suggested that the Senhai Holy Clan stop the offerings and choose to defend their ancestral lands, using the long passage of time to weaken Yan Xiao.