Fifty million years after the Ancient Emperor's departure, this was the life limit of the Supreme Great Sun Immortal Dynasty on the level of Immortal Science.
In reality, it could never be achieved.
Natural disasters, human misfortune, engineering errors, all would affect the final outcome, especially human misfortune, which almost every Immortal Dynasty could not avoid.
At that time, the Supreme Great Sun Original Ancient Talisman would frequently make calculation errors and could no longer compute the precise Immortal Dao Universe Constant; thus, the Immortal Dao Civilization began to collapse. Various sophisticated Immortal Dao agriculture, industries, and transportation would crumble, vastly reducing production efficiency.
