Lan Wangji and Wei Wuxian picked up a little baby in the back mountain and named it Xiao'er. When Xiao'er was five years old, she followed the two of them on night hunts. At the age of twelve, she was able to hunt down evil spirits by herself. Lan Xiao's crowning ceremony at the age of 20 was attended by hundreds of families in the fairy world, and another new head of the Lan family took over. At the same time, Lan SiZhui succeeded him as Immortal Governor. After Lan Wangji left office, he and Wei Wuxian traveled around night hunting, only enviing mandarin ducks but not immortals.
Concept: imagine what they will look like when they are old