Based on Yan Chen's assessment of the situation, he guessed that the two elders would most likely agree.
Or... in a way, Elder Rao and Elder Tang have actually been paving the road for Qiu Tu all along.
This is evident from the fact that all officials of Heaven, Earth, and New Three States are promoted from Dongye State.
This is totally contrary to the pre-sanctuary modus operandi—letting local powers band together inevitably undermines central authority.
But, if you interpret it as a deliberate split from the "Four States," designed to pave the way for Qiu Tu's independence, it starts to make sense.
Of course... this kind of paving also comes with its own layer of precaution.
While Qiu Tu's strategy of "using Evil God against Evil God" hasn't been fully proven yet, Elder Rao and Elder Tang will definitely try to build up a firewall.
To prevent this path from failing, leading to a meltdown in the situation at Sanctuary Eight.
And... this is precisely Qiu Tu's opportunity.
