On the night of the fall of the country, what the eldest princess Yun Zhao held in the ruins of the Mirror Palace was not the imperial seal, but a scorching fragment of an ancient mirror. The prophecy guided her deep into the misty forest. What was buried there was not the treasure of the restoration of the country, but the astrology, water conservancy, and farming maps accumulated by Shuangli for three hundred years-the real fire of civilization.
Giving up her fancy clothes and titles, she changed her name to "Yun Zhao" and established the first secret school on the scorched earth with Jin, a silent young boy from the enemy country, and Yue Gu, an elderly maid. Without swords, they used knowledge as their blades: they used astrology to predict the weather, used water conservancy to revive the fields, and relied on medical skills to save the wounded. The number of defectors is increasing day by day - survivors of the subjugated country, deserters from enemy countries, and hermits in the foggy forest. They condense into a new name in the ashes: Jingyuan.
However, the iron hooves of the Black Iron Army have not stopped, and there is an undercurrent of betrayal within. Jhin also hides shocking secrets about the origins of the two countries. When the road to national restoration encounters the choice between "rebuilding the old system" and "creating a new life," Yun Zhao must answer: Is what she wants to take back the throne of one surname, or a tomorrow worth protecting for millions of people?
This is a song that ignites a spark in the long night. About how civilization takes root in the ashes, how the weak use wisdom as armor, and how a princess takes off her brocade robe and uses her hands to draw a truly immortal kingdom on the ruins.