When he woke up, Lu Jia accidentally traveled to the world tens of thousands of years later, and even left the earth, and came to a small Canglan star. Has been coveted by Canglan Star, in order to return to the earth, Lu Jia did not hesitate to go home as an undercover agent of Canglan Star... PS: The protagonist has a system, you can guess the system by yourself from the cover.