Thousands of years of reincarnation, the prehistoric world has become a scientific world, An Xiaoyu, who came out of the desert of the Eastern Desolation, has encountered drastic changes, and embarked on the road of studying after untold hardships. Fierce battles in the desert, secret battles in the imperial capital, discord among the aristocratic families, anecdotes and strange events... ...Why do I have to be unlucky wherever I go? What is God's favor, can I just let it go? With a handsome second lieutenant and an unreliable teacher, can An Xiaoyu find her love in the past and present? Wait, teacher, you What are you doing?!