In three separate books, Wang Ling had read about the War that had occurred around 50,000 years after the era had opened.
Records state that the war was against beings they call themselves as demons. These demons came from a realm that is from a plane of existence no one knew of, the Abyss.
The demons tore through the portals of the Abyss and opened up a path for themselves to enter. The path that had opened was large, but the people of the Celestial Spirit Realm fought back and drove them away.
This was the bits of information Wang Ling had gathered inside the library. Currently, he was at the second floor of the library, slowly devouring knowledge he could get from the books present inside.
It had been seven days upon his return and Wang Ling had only gone back to his own courtyard three times as he would constantly lock himself inside the library in order to learn more.