After Su Qing traveled through time, in order to avoid being involved in a house fight, she used modern historical knowledge to help her father solve the "tax statistics" problem, which accidentally attracted Li Ke's attention.
Li Ke was framed for "prince seizing the legitimate son" and involved in a "corruption case." Su Qing used her understanding of the "Zhenguan New Deal" to find evidence to help Li Ke clear his grievances, and the two formed trust.
Emperor Taizong of the Tang Dynasty wanted to arrange a marriage for Li Ke, but Li Ke expressed his intention to marry Su Qing, but was opposed by the ministers (Su Qing was a concubine and her "origin was unknown"). In order to prove herself, Su Qing proposed "improving textile technology" to help the people increase production, which was recognized by Emperor Taizong of the Tang Dynasty.
The relationship between Su Qing and Li Ke gradually stabilized, but she found that the jade pendant she carried began to shine, and it seemed that there was a possibility of "going back". She was caught in the choice between "staying in the Tang Dynasty" and "returning to modern times".
