"Just what are these treasures?"
A group of youths couldn't help but ask.
The black robed receiver pointed around. "The surrounding balconies where many have trained before. For over a trillion years, many warriors have stayed and left this city. During their training, any spark or idea would be carved into the grounds and surfaces of the walls, and with deep thought, or whatever gains they discovered, they would also carve there."
David nodded. Indeed, comprehending the origin laws was akin to flashes of inspiration. When one suddenly comprehended something, one would carve it down. Afterall, a picture was worth a thousand words.
Even though some people would casually write down a line of words, after a few years, by looking at those few words could easily jolt the memory of the time from before. And ironically, if one typed it into a computer, after a few years, looking at it may not even help recall anything.