Da Qin: One Person Defends a City, and the Sword Opens the Gate of Heaven

The Qin Dynasty has four borders: the eastern border resists monsters, the western border resists demons, the southern border resists ghosts, and the northern border resists undead. The people of the country only know that hundreds of troops are stationed in the east, west and south borders, but they don't know about the northern border, which is guarded by only one person. The northern border was lost and the entire army was destroyed. Only Xiao Chen survived. He obtained the Human Emperor System and achieved extraordinary achievements. He defended a city by himself and faced millions of dead souls alone. On that day, the sword opened the gate of heaven, and all the dead souls were destroyed. On that day, the name of the Sword Immortal was sung by the people. From then on, Xiao Chen became the God of War of the Great Qin Dynasty and the guardian of the country. With one man and one sword, he traveled from the north to the ninety-nine states, cleared the four borders, suppressed all races, and became the human emperor.