In the Xianchun era of the Southern Song, the fires of war rage across Xiangfan, and the Great Song dynasty stands on the brink of collapse.
Modern special forces elite Xiang Yunyuan wakes up one day to find himself a lowly squad leader at Baihe Fort on the Xiangyang front.
The walls have crumbled, and provisions are nearly gone.
Only twenty-three wounded and battered soldiers remain in the fort.
Outside, the Mongol army sweeps across the land, its iron hooves driving south.
Everyone thinks this ruined fort will not survive another assault.
But they do not know that this squad leader, who crawled out of a mound of corpses, carries in his mind nearly a thousand years of military knowledge from the future.
Fireteam tactics, overlapping fields of fire, trench fortifications, special reconnaissance...
Starting with twenty-three battered soldiers, he builds a new army.
Purified gunpowder, corned powder, hand cannons and heavy artillery, a military-industrial system...
Starting with one crumbling earthen fort, he gradually pries open an entire age.
The Mongol cavalry is powerful?
Then let trenches, firearms, and steel battle formations show them:
The times have changed.
Yet what Xiang Yunyuan truly wants to change has never been just one war.
Land redistribution, industry, military training, schools, healthcare, armaments, trade...
Can the Zhao Song dynasty be saved?
Can the Mongols be defeated?
Will he become emperor?
This realm...
Whose realm should it be?
From twenty-three doomed soldiers in a ruined Xiangyang fort to the invincible iron army of Han sweeping across ten thousand miles.
From a lowly squad leader destined to die to the man who reshapes the lands of Huaxia.
In this life, Xiang Yunyuan will do more than save a dynasty on the verge of extinction.
He will forge an entirely new age with his own hands.
