Jiang Yue travels to Jiang Yue from another world. She has the same name but a different life.
Jiang Yue: Okay, since we have exchanged lives, I will try my best to live in this other world!
However, Jiang Yue's life encountered the apocalypse not long after it began.
The end of the world is an opportunity surrounded by dangers.
Purpose: Knowledge is useful wherever it goes.