The 8 Diagram Pole Fighter

Mongols with the help of an insider, ambush the influential Yang Family, defenders of the dynasty. The Mongols must hunt down all Yang survivors so their insidious plot to overthrow the dynasty will not be uncovered.
The Yangs are betrayed by a government official conspiring with the Mongols. All of the Yang family males except the 5th and 6th brother are killed. Fu Sheng loses his mind after the death of his family, while the other brother takes refuge in a Buddhist temple.