Ever since the restoration of the Heavenly Track in the Eight Desolates World, Sun knew that the tolerance level of the Emperor Venerables greatly increased, and they no longer minded their afflicted Immortal Venerables ambitiously contesting for the Emperor Venerable's position.
They still didn't want to give up their thrones, but they already had enough room for manipulation, turning this ambition towards the battlefield.
The great war between the two races would use up all ambitions of the Immortal Venerables. The more you want, the more you need to sacrifice in the war, then the problem that the Emperor Venerables are worried about would be automatically settled.
It's precisely because of this change in the mentality of the Emperor Venerables that Sun dares to employ this strategy.
