Travel Back to Ancient Times and Become a Peasant Concubine

Ruan Guo, an urban girl with an amazing brain, once traveled through time but sadly became a grassroots. Nani, time traveling is also an art. Why are others either the daughter of a general or the legitimate daughter of a minister? The male protagonist she meets is either a prince or an emperor, and later becomes either a princess or a queen. Why is it that when she comes to her place, she can only be a village girl, and the man next door is just a village boy...