Sign in to the Heavenly Palace: How Did My Senior Brother Become the Immortal Emperor on Earth?

Reborn in the world of cultivating immortals, Ye Changsheng obtained a sign-in system I originally planned to live a stable life in the sect, but unexpectedly learned the shocking secret of the old heaven during an experience... Why did the old heaven collapse overnight? Why are the human-monster wars losing? Where is the Victorious Buddha now? Ye Changsheng has since embarked on the path of pursuing the truth...