Siheyuan: When I Am a Kid, I Don't Know What I Want, so I Will Marry the King.

[Siheyuan+Era+Protagonist Time Travel+System+King of the Daughter Kingdom+Xiao Dang's Rebirth] Zhang Fan traveled through time and entered the world of courtyard house. At the beginning, he was rejected by Xiaodang, and then he was beaten by Banggeng. Unexpectedly, an accident. Let Zhang Fan obtain the mission system. It also allowed him to meet the future king of the daughter country After an accident, Xiaodang was reborn. As a result, the plot of the Siheyuan changed dramatically. As the protagonist, Zhang Fan, how to use the things obtained from the system to live happily.