Lin Youxia is an ordinary female high school student with a mixed-race half-brother. On the day her parents divorced, she was dragged to Xi'an by her brother to visit the mausoleum of Princess Yongtai. Unexpectedly, she was dragged by the portrait to Li Nunu, a young girl from the Tang Dynasty. The 18-year-old girl shrank to a 7-year-old girl. This is definitely the greatest tragedy in the world...