Jiang Qingran died and came back to life. The reason was simple: he had transmigrated into a book.
Worse, he had ended up in the body of a vicious, tyrannical villainous extra who bullied the male lead in the original novel. The System told him the main System had read the book, and that this extra’s prolonged abuse, followed by a chain of later events, drove the male lead to become a villain. He slaughtered his way through the world, leaving it drenched in blood and bringing the cultivation realm to ruin.
The System promised that if Jiang Qingran changed the extra’s fate and rewrote the botched ending, it would send him home.