Allison said,
"We should strive to understand this mechanism next. Only in doing so can we save our planet."
"And what do you think about the two of us?" Yang Ming asked. "Have you found anyone else?"
"For now, it's just the two of us," Allison pointed to Yang Ming and then to himself, speaking with determination, "We are the pioneers, and also the ones retaking the exam."
Yang Ming said, "Don't you think there's a paradox here?"
"What paradox?"
"We've returned to the Milky Way about thirty years before the game launch. If we change the past, it will inevitably affect our planet."
"You're wrong, Pikachu."
Allison smiled and said,
"That's why I said our planet is trapped in a space-time bubble, completely isolated from the outside world, except for the laws of physics.
"This is the only way to reasonably explain several things.
