"Could it be him! Why on earth would they want to destroy the world that Master painstakingly created?"
The involvement of the Dragon God made it far more likely that the eldest disciple, Jiuge, was also involved. They claimed they wanted to save the Heavenly Lord, yet here they were, destroying the Immortal Realm. Were they killing immortals just to avenge their Master?
That hypothesis didn't hold up, because the divine monarchs and divine kings who had plotted back then had already been purged and had vanished without a trace.
Chapter 1924