After Xuandu, Guang Chengzi, and Medicine Buddha teamed up to stop the attack, Black Tortoise looked serious. He was clear about the power of Primordial Flag of the Five Regions, especially his Xuanyuan Water Control Flag, which had an amazing defense. Even if his Golden Body of Martial Arts was given a full play, its power was far away from that of his Xuanyuan Water Control Flag. Similarly, it was not easy to break through the defense of Primordial Flag of the Five Regions.
Actually, Black Tortoise understood that it was virtually impossible to defeat these three by himself, and the biggest obstacle was those three Primordial Flags of the Five Regions. However, Black Tortoise did not withdraw. As Kong Xuan said, Black Tortoise had experienced a few battles in the preexistence and this life. Thus, there was a rare fighting intent in Black Tortoise's heart, since he now had an opportunity to fight those who had the same cultivation as him.