I Know All the Skills of the Ancient World

Traveling to the prehistoric times, I watched the opening of the sky, and saw Pangu fighting three thousand demon gods. He obtained a system that can obtain the skills of legendary figures in the world, and the system can be strengthened to unlimited power. Fight against Tongtian with the skill of slaying the sky and drawing the sword Use the Great Destiny Technique to fight against Hongjun Discovering the invasion of the alien continent, the prehistoric era ushered in the greatest crisis Summon powerful men from all over the world to fight against alien races... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.