Smart, refined, extremely duplicitous, casual in doing things, and a bit lonely from time to time, he was born in the 21st century. His father is an archaeologist and his mother is a science geek. Because she objected to her parents' blind date activities in the 21st century, the eldest daughter chose to run away from home. However, Miss Leng's running away from home was extremely unusual. She suddenly arrived in the Tang Dynasty and had an unprecedented legal love affair with the notorious hidden prince Li Jiancheng in history...