During the Northern and Southern Dynasties, the world was divided. The north was ruled by the Hu ethnic regime, and the south was ruled by the Han dynasty. War was frequent, and ethnic conflicts, clan struggles, and Buddhist and Taoist disputes were intertwined. The rivers and lakes were also affected by the temple crisis. The martial arts in the north were loyal to the Hu dynasty, while the martial arts in the south maintained the orthodoxy of the Han people, forming a confrontation. However, in these troubled times, a lost martial arts secret book "Tai Chi Knife Sutra" turned out to stir up the storm.
