Northern Frontier Army

Northern Frontier Army (北境军, Běijìng Jūn) is the army of Mo Xi and previously Gu Mang. Its soldiers were poor and destitute commoners, most of them were born as slaves.

Banner
When Gu Mang was the commander, he made a banner for the army by cutting a green flag into a turtle shape. He cast a spell to make the turtle roar every time an incense-time has passed: "Wangba, Wangba, hero hair and mighty eye, awe and power throughout the sky!". At first, other armies made fun of the banner, but as Gu Mang's army collected more victories, seeing the turtle made every enemy soldier frightened.