If you are a big Chang Cheh movie fan this movie is one of his better directorial jobs. Somehow this movie saddens you because most of the major characters (the venoms) are pitted against each other. Because of a cunning plot by the Ching government North Shaolin and South Shaolin are against one another when they are really factions of the same school operating individually. Because of a court order the Ching government uses the best teachers from both the North and South Shaolin to train it's guards. A head Ching official arranges a contest at Ching headquarters to see which school teachers are superior to the other. North Shaolin proves to be far better in this friendly duel. The head Ching official then kills the 3 South Shaolin teachers and frames the North Shaolin teachers for their death, returning their bodies to South Shaolin. South Shaolin is now furious and sends 3 more students to try and defeat the North Shaolin teachers. Another "friendly" duel is arranged and tempers flare. Two more South Shaolin students are killed by North Shaolin teachers. Realizing that South Shaolin is obviously no match for North Shaolin the teacher appoints 3 more students to undergo intense training on particular styles to offset the strengths of the North Shaolin students. These training scenes are some of the best ever to grace the martial arts screen. One South Sholin student (Lo Mang) learns Mantis style, another student (Phillip Kwok) learns Lightskill and the Pole and the last student (Wei Pei, snake) learns a style that specializes in combat in close to the opponent. After they master these skills they are now ready to take revenge they swore to their dying master. At the last minute the two schools realize there is a plot by the Chings to destroy both the schools; but because they swore to their teacher they fight anyway. A classic martial arts film, one of the best Chang Cheh movies ever made. 8/10 on the scale.