Setting: A chaotic, empty realm known as the "World Between Books." It was formed from four heavenly books, the Four Great Classical Novels. They were meant to remain separate, but upheavals in the cosmos shattered the boundaries, leaving the heroes of Liangshan, the warlords of the Three Kingdoms, the Twelve Beauties of Jinling, and the gods and demons of Journey to the West all jumbled together. The timeline is a mess, logic has collapsed, and the world is on the verge of destruction.
Protagonist: Lin Fan, a modern office worker who knows the Four Great Classical Novels inside out and is a master of snark. After transmigrating, he gains the God-Tier Revision System.