The Failure of My Deduction Changed Reality

In this world, there will be a [World Cleansing] every thousand years. The powerful sacrifices and cultivation tamper with the past, the losers and their deeds are completely erased, the memories of all living beings are refreshed, and the remaining history in the world is all the lies of the victors. Shen Yan, an orphan from the outer sect, is dying and awakens to the ancient relics of the Star Observation Reincarnation Disk, which can be used to deduce the past and future by spending his life span. If the deduction is successful, only information will be obtained, and no cultivation will be given as a gift; once the deduction fails, a terrifying reality shift will be triggered, local history will be rewritten, and the memory of others and even oneself will be confused.