Lin Xian couldn't understand.
What exactly does the brightest, most beautiful future mean?
Before this.
Lin Xian had seen a total of nine world lines, nine possible futures for humanity, corresponding to the nine dreamscapes he experienced.
From technological stagnation to various bizarre societal forms, and then to post-catastrophe civilization rebuilding...
Each ending, whether good or bad, whether humanity was happy or not, was a matter of personal perspective.
But without exception.
In the end, these nine future worlds were all destroyed precisely by the World-Ending White Light at 00:42 on August 29th, 2624.
Thus, although the world lines changed several times, Einstein consistently said "humanity has no future," and Lin Xian always thought what Einstein meant was [World-Ending White Light]!
After all, only this makes sense.
Without the World-Ending White Light, none of those nine future endings could truly be considered as having no future.