There is only one person in the whole museum who can read the line that was scraped off the stele.
The price is this: every time she finishes reading a passage, she forgets one thing she did that day.
Yangzhou Tiande Library, volume seven of the Ming dynasty stone rubbings collection, the only copy in the entire city.
Three years to decide, with only two possible outcomes: remount and restore it, or keep it sealed away.
If she ruins it, there is no second copy to compare against.
The master craftsman asked her, "Who will take responsibility for this step?"
She said, "I will."
The next morning, she had forgotten what she signed the night before.
Theme: Restore the old as it was, but leave a way forward.