Holy Calendar, 11XX.
The last two digits are too blurred to be visible.
Erin rubbed her head, trying to decipher those numbers at the bottom of the page, thinking seriously for a few seconds before suddenly raising her head: "What is the Holy Calendar... Did the Venerate Saints Monastery come up with their own calendar?"
"This 'Holy Calendar' has nothing to do with the Venerate Saints Monastery, it's a universal calendar used by some major Civilization Circles outside," Yu Sheng waved his hand, seemingly reminded of something, his expression gradually taking on a hint of seriousness, "This is something from hundreds of years ago..."
Erin was stupefied, suddenly widening her eyes slowly: "Hundreds of years ago? Didn't you just say this place might have been abandoned only a few years ago—how can this booklet survive in this harsh planetary environment for hundreds of years?!"
