The original plan between Emperor Bai and Ancestor Tian Chen had only one step, which was for Jian Wushuang to infiltrate into the Imperial City, use the Void Token, and allow all the experts from the Eternal Chaotic World to come in and destroy the city.
But after some thought, Emperor Bai felt wiping out only the experts within the city was not enough. After all, most high-level experts would not stay in the city.
From there, step two was formed.
"I have discussed this plan several times with Tian Chen. It should be possible, and if we want to make our move we should do it while the Three Emperors World is not completely prepared. If you need a decade to master the secret skill and reach Third Stage… I'm afraid they will have been well prepared by then. So, three years at most!"