Su Mingwei, the daughter of the Minister of Rites of the Dayin Dynasty, was frail since she was a child and did not go out often. While visiting the lantern festival on Lantern Festival night, she accidentally bumped into a mysterious man who was being hunted. The man left behind a jade pendant with the word "moon" engraved on it.
A few days later, she found the injured and comatose man again in the abandoned heating pavilion of her home, so she secretly hid him and only told the outside world that he was her distant cousin "Xie Lin".
During the relationship, Su Mingwei discovered that Xie Lin was not simple. He knew the art of war and the Western Regions, and he had many secrets. As rumors about the "remnants of the Yuezhi" increased in Beijing, the Jin Yiwei began to investigate, and Xie Lin's identity gradually became impossible to hide.
It turns out that he is Ye Xuan, the last prince of the Yuezhi, who came to the capital to find out the truth about the country's demise and to retrieve the jade seal passed down to the country. Su Mingwei was involved in this turmoil, and experienced escape and adventure with him. The two gradually fell in love amidst the storm, and eventually a big secret between the two countries was involved.
Intent: Personal growth and the righteousness of family and country are intertwined and symbiotic in the emotions of troubled times.