Both Sides of the Prehistoric Times

Starting time travel together with the school beauty? And cheat fingers and systems? Can you still cultivate immortality in the real world? Is there really such a happy thing? Zhang Can, who had been lying in bed with a headache all morning, decided to take a shower to calm down. When he got out of bed, he suddenly glanced at his computer screen. He saw clouds and mist shrouding the trees in the sky, and there seemed to be something in the lush grass forest that was incompatible with the surrounding environment. It seemed... It seemed like someone was waving to him? !