The Prehistoric Era rule was a common rule in web novels. It referred to the various monsters, forces, characters, and so on that appeared in the novel. They all had their own set of rules and codes of conduct. These rules were often set to ensure the continuity of the plot and the smooth development of the story. The rules of the Wasteland Era usually included the following aspects: 1. Level system: monsters, forces, characters, etc. in the novel have their own level system. Different levels correspond to different abilities, skills, and equipment. 2. Battle rules: The battles in novels usually follow certain rules. For example, the attacker and the defender can only attack once or use specific skills and weapons within a certain period of time. 3. Code of conduct: The monsters, forces, characters, etc. in the novel also have their own code of conduct. For example, some rules prohibit direct attacks on humans or have a friendly attitude towards humans. 4. Treasure rules: The treasures in novels usually have their own rules and usage methods. For example, certain treasures can only be used by certain characters or treasures can interact with each other. These rules could provide more details and depth to the plot of the novel, and at the same time, make the novel more readable and interesting.