Traveling Through the Heavens: Invincible at the Beginning

Good news: I traveled through time and came to the world of the divine eagle, and got the system, which rewards innate invincibility at the beginning. Bad news: There are no people in the innate realm in this world. I can't beat anyone except those in the innate realm. Originally, Ling Feng was just an ordinary delivery boy. Due to an unfair fate, he got the opportunity to set foot on the time train. The time train will take you to different worlds. If you want to get off the bus, you can only reach the end of the journey alive. When one story ends, the next begins. My story is over, now it's you, boy!