C337 The Secret of the World.
"Why don't I understand?"
Su Yuyin forced a smile and said, "If I'm not wrong, we're just characters in a book. Since you've already seen your own name in Substitute/, what do you mean, not the most important?"
"Forgive me."
Su Yuyin rubbed her forehead. "I was too shocked, so I spoke incoherently."
"It doesn't matter, I can understand."
Bai Jun patted her hand and said