The relationship between the three great Immortal Sects of the Great Lai Dynasty was extremely complex. Each of the sects wanted to annihilate the other to reign supreme alone, yet they had to unite against a common external threat. That's because, oftentimes, their interests aligned.
For example, none of the three wanted a powerful Immortal Sect appearing near their own nation.
And near the Great Lai Dynasty, there was only one powerful Immortal Sect—Hundred Peaks Sect.
Ever since they learned of the results of the competition held by the Guardian Immortal Imperial Dynasty and knew of the Golden Core masters from Hundred Peaks Sect, they had abandoned any thoughts of instigating troubles during the Minor Era of Inversion of Heaven and Earth to eliminate Hundred Peaks Sect.