Regarding Zhang Buku's mention of tribulations, Xu You didn't take it too seriously. Over the long years, tribulations aren't uncommon; as long as one lives in this world, troubles are inevitable.
Yet he did not expect that this particular tribulation was far beyond what the past could compare.
The entire Heavenly Dao will be thrown into turmoil, subsequently affecting Chaos.
A thousand years in the Heavenly Realm equals three hundred sixty thousand years in the Human World. The Palace of the Polestar lectures on the Dao for a thousand years, then pauses for another thousand years, each time causing great waves in the Heavenly Realm and even the Heavenly Dao.
After the third lecture at the Palace of the Polestar concluded, more and more beings attacked the listeners, and even the Immortal Gods acted within the Heavenly Realm, ignoring Celestial Rules, incurring Cangtian's wrath, and being obliterated by the Nine Heavens Divine Thunder, their bodies and souls utterly destroyed.
