In the original work, Night Sky Lan Wangji wanted to take Wei Wuxian back to Suzhou, so he took off his forehead wiper and wrapped it around Wei Wuxian's hand.
Lan Wangji and Wei Wuxian suddenly disappeared in this space at the same time.
When they woke up again, the two of them discovered that their souls had traveled to a peaceful world where both parents were alive.
And the time point happened to be during the period when I was studying in Gusu at the age of fifteen.
Zangse Sanren: Ah Ying, it's time for you to go to Suzhou to study.
Wei Wuxian: What? ! I don't want to run into the old-fashioned Lan Wangji again! ! !
Intention: It's hard to realize your dream