In the autumn of the twelfth year of Yongqing's reign, Chu Yunshen, the general of Zhenbei, stepped into the imperial city with the border wind and frost, but he did not know that he had already become the center of the whirlpool of power. The truth about his father's death in battle twelve years ago, the late emperor's secret edict hidden in the imperial study room, and the continuous smoke in the north pushed him to the forefront of the dynasty's survival. When the Seventh Prince Xiao Jamyan's sword penetrated the chest of the old emperor, and when Beidi's two hundred thousand cavalry broke through Yanmen Pass, this man who was burdened with a double blood feud had to fight his way through the broken mountains and rivers.