Given the relationship between the two parties, the ideal outcome for their relationship would have been the annihilation of one party's members. Only with one side completely wiped out could their struggle be considered truly over.
However, it was clear that achieving such a result would be rather difficult at present. Zhou Tian's survival ability was too strong, and the combined strength of the Three-headed Divine Beasts was not weak either. In this situation, where neither side could do anything to the other, it was very unlikely that one would become extinct.
Thus, if the two sides could not resolve their conflict through life and death, even if reluctantly, Zhou Tian understood that he and the Three-headed Divine Beasts would have to coexist in some manner for a considerable period.