Shen Qingci was born in a scholarly family. He studied arithmetic and astrology with his father, who was the Imperial Supervisor of the Qin Dynasty since childhood. He had many doubts about the cause of his father's death. Under the emperor's order, he had no choice but to marry into the regent's palace. She knew very well that she had the mission to find out the truth and protect her family. She originally planned to tolerate it in the palace, but she didn't want the gears of fate to start turning.
Xie Yanzhi, the regent with overwhelming power in the government and the public, after the sudden death of the late emperor, he assisted the young emperor as an imperial uncle. His tough tactics in the court were awe-inspiring to everyone. However, in his heart, he actually insisted on his responsibility to the country and the country, and moved forward alone in the whirlpool of power.
The marriage of the two people was initially a union with their own thoughts. Shen Qingci married into the palace just to explore the palace secrets behind her father's "accidental" death. Xie Yanzhi also had his own considerations in accepting her. On their wedding night, Xie Yanzhi stayed alone in the study and had a cold attitude towards the princess. Shen Qingci secretly speculated and tried to find clues in the palace.
By chance, Xie Yanzhi discovered Shen Qingci's proficiency in astrology. It happened that the armillary sphere newly made by Qin Tian Jian could not calculate the star positions on the winter solstice, so he took her to check it out. Shen Qingci relied on what she had learned to accurately point out the problems with the instrument, which impressed Xie Yanzhi. After that, Xie Yanzhi took the initiative to mention the truth about Shen Qingci's father's death in angering the late emperor, and trust between the two quietly sprouted.
As they get along more and more, they get closer to each other in daily life. Shen Qingci helped Xie Yanzhi interpret ancient books on star maps, and Xie Yanzhi also secretly protected Shen Qingci when he encountered difficulties from the Queen Mother. In the process of jointly responding to the court crisis
