Defying the heavens for decades in a prehistoric novel could bring very serious consequences. The following are some of the possible consequences: 1. Destroying the balance of the Primordial World: Defying the heavens for decades may destroy the balance of the Primordial World, causing various Primordial creatures to become extinct or become abnormally powerful, thus threatening the stability of the entire Primordial World. 2. Change the order of the Primordial World: Defying the heavens for decades may change the order of the Primordial World, leading to conflicts and conflicts between various forces and even chaos and war. 3. Weaken the main character's strength: In prehistoric novels, the main character was usually the representative character who defied the heavens. If the protagonist defied the heavens for decades, his cultivation and strength might be weakened or even become ordinary. 4. Change the fate of the Primordial World: Defying the heavens for decades may change the fate of the Primordial World, causing the protagonist to eventually fail or be abandoned by fate. [5. Arouse the Divine Sense: In novels, the Divine Sense is a very powerful force that can trigger resonance and reaction between gods and devils.] If Defiant Decades could trigger the reaction of the gods and demons, the main character might suffer huge damage. 6. Change the protagonist's personality: In prehistoric novels, the protagonist is usually a character with a very unique personality. If the protagonist defied the heavens for decades, then his personality traits might have changed greatly. He might become selfish, cold, or heartless. 7. Triggering the intervention of the Divine Realm: In prehistorical novels, the Divine Realm is usually a very important force. If the protagonist defies the heavens for decades, it may trigger the intervention of the Divine Realm, causing the reaction and action of the Divine Realm. The protagonist may face great threats and challenges. These were just some of the possible consequences of going against the heavens for decades. The specific consequences would vary according to different plots and settings.