Start with One Person and One Dog, Traveling Through the Ancient Times

In an accident, Erha and I traveled to the primeval forest in ancient times. One person and one person, without cheats, systems and plug-ins, how did I survive? How did you get out of the virgin forest? In a primitive tribe, I got acquainted with Xiao Quanquan, a primitive girl, and accidentally discovered a yellowing diary page. The diary was written by my "senior traveler" Kong Meng. He claimed to be a member of the scientific expedition team and came from the 22nd century AD. He traveled through time and space in a "spaceship" and came to the ancient times to carry out the Destiny-1 mission. What is the Destiny One mission? What happened to the earth in the 22nd century? Why send a scientific expedition team to ancient times? How long has it been since Kong Meng traveled here? Are there any other shuttlers? How did I travel to ancient times? Can I still travel back in time? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.