In the twelfth year of Dasheng Yonghe, Tiele's 300,000 cavalry broke through the northern Xinjiang. Xiao Yunting, deputy general of the Ningzhou frontier army, was ordered to do so at the critical moment, but he fell into the whirlpool of family strife and imperial suspicion. When the supervisory army brought a secret order to "abandon the city to protect the army," the unknown general broke his arrow and said: "After Ningzhou, there is the Central Plains." Under the setting sun, like blood, a border defense battle related to the fate of the dynasty began. Fire attacks, water floods, alienation and rebellion, traditional military methods and new tactics collide fiercely in this scorched land, and the dragon-patterned military talisman on Xiao Yunting's waist that has disappeared for twenty years is quietly revealing a secret that can overturn the dynasty...