In the spring of the thirty-sixth year of Wanli, there was a visit to Yuzhai in the capital.
Eighteen-year-old Su Wanqing waited for Lin Zhan, a royal guard covered in blood.
He brought the news of her brother Su Shendu's death and half of a dragon-patterned jade pendant. The moment the two pieces of jade merged into one, a coastal defense map "Hidden Scale" showing 300 hidden gunpowder depots from the Yalu River to Nanjing surfaced. This is the last trump card of the Ming Dynasty, and it is also the prey that Cao Xian, the eunuch, must seize.
From the capital to the Yalu River, from the cellar of Wuming Island to the underground palace of Xiaoling - the two of them fled while being hunted, and they ran side by side.
The heroic souls of three hundred royal guards, the one-eyed watch for sixteen years, and the trust of guarding the mausoleum for thirty years - generations of people go on and on, just to guard those four words:
The broken jade lights up.
The abyss is always there, and those who hold the fire remain.