In the Thorny Heart Tower, the killer levels are divided into four levels. The world is black and yellow, and it is also recognized as the four major martial arts cultivation realms in the world. The protagonist Xu Mingyue time travels to a ground-level killer, but she does not want to continue the assassination. She just wants to spend the rest of her life seeing the golden hairpin, so she manages to fake death and escape from another mission. She adopts the identity of a slave, completely breaks away from the Thorny Heart Tower, and takes root in this fantasy world of Dream of Red Mansions.
