Tang Yixun, a 13-year-old junior high school girl. But during a school final exam, he accidentally traveled to the Qing Dynasty and was taken in by a prince by accident.
A very strange thing happened to her in the Qing Dynasty - she grew a year older overnight! This strange phenomenon happened for 7 days. It can also be said that she turned 20 years old. On the day she turned 20, the prince who took her in told her that she, who had just traveled to the Qing Dynasty, would travel again to the period of Emperor Xuanzong Li Longji of the Tang Dynasty on behalf of the people of the Qing Dynasty, and get back a personal treasure Liuli Pendant from Concubine Yang.
But why did Tang Yixun need a glass pendant when he traveled to the Tang Dynasty and the Qing Dynasty? How will she complete this unprecedented task? What kind of secret is behind the glass pendant?
Ahem, um, without further ado, "The Only One I Will Love in My Life" looks like it!