The Sky Veiling Flag of Chaos was the natal immortal artifact of the North Celestial Emperor, one of the Heaven's five Celestial Emperors. A unique treasure born in the Primal Chaos, it was capable of breaking through the void; pacifying natural elements such as earth, water, fire, wind; and weakening over ninety percent of offensive divine abilities—including demonic magic and curses. Meanwhile, ordinary offensive magic of five elements had no effect on it.
Liu Bang had borrowed it from the North Celestial Emperor, and he could only use one-ten-thousandth of its power. But, just with this tiny bit of power, he was able to keep the twelve Kunwu Swords at bay. One of the reasons was that Wu Qi was not personally controlling the sword formation, and the other was that the flag was just too powerful. Kunwu Swords, crafted by the Yellow Emperor, were man-made divine weapons after all, which made it inferior to a treasure that was born in the Primal Chaos.
