This is probably his most violent movie where he has an uncontrollable temper and picks fights (with a cause, of course). It's marked by patriotic fervor too, since it's set in Japanese-occupied Shanghai. A must-see for fighting aficionados.
But it lacks the depth of Enter the Dragon and like most patriotic movies, it's more meaningful for the occupied than anyone else - what a deep impression territorial aggression makes on the aggressed! Unforgettable because domination is unforgivable.