The interests of the Nether Yin Department were too great for the two parties to swallow.
Pei Xuanjing was indeed the strongest existence between heaven and earth. He could suppress any True Immortal, and if he exhausted all resources and spared no expense, Pei Xuanjing could even suppress all True Immortals.
But what was the meaning of such an outcome?
In the end, this outcome would only mean completely overturning the game board, destroying this world, and utterly reducing the heavens and the earth to ruins, destroying everything Pei Xuanjing had in an instant.
Why bother!
There are those who are not afraid of losing because they have nothing to lose, but the current Pei Xuanjing was no longer the barefoot man he had originally been; he was no longer himself. He had his own relatives and friends, and his own disciples and successors.