Bloody Duel: Life & Death (1972)

Plot

Since 1895, Japan's imperial army has steadily tightened its hold on Northern China, crushing anyone who resists. When the Japanese overseer punches holes straight through the local kung fu masters (yes, just like that anime with the exploding heads and fountains of blood—you know the one), the young fighters realize their traditional techniques won't be enough. To have any chance of victory, they must look beyond their own martial heritage and find new ways to fight back.