There's a question going around online: If you met a ghost, could you use materialist theory to convince it that it doesn't exist?
At this moment, Chen Yu is gazing in dismay at a girl as beautiful as wisteria, wondering how he can convince Keqing that she's a fictional character.
Chen Yu: By common sense and reason, this is Earth, and you're just a fictional character.
Keqing: Then who are you?
Chen Yu: You're not qualified to know who I am yet.
Clang! Her sword leaves its sheath. Chen Yu trembles as he stares at Lion's Roar, poised against his throat.
Chen Yu: I was wrong! Please spare me, Lady Yuheng!
Only later does Chen Yu learn the truth: Keqing and Teyvat are both real.
(The story features parallel worlds. Earth and Teyvat are connected, and the setting differs from that of the game.)
I will engrave a piece of Qingchu. Come on, author! Take good care of you!