Making Up the Three Kingdoms as I Go

At a certain science and technology university, a strange magic mirror is discovered. It creates a black hole that sends the students present there to the Three Kingdoms era. Their arrival throws the historical Three Kingdoms period into chaos. People who should never have existed appear, while events that should have happened never do... What strange new things will Tian Jing and Meiling, who transmigrated there by accident, encounter in this chaotic time and space...?