This is surely one of Donnie Yen's best films. The fight sequences are well choreographed with a lot of MMA (Mixed Martial Arts) in it. MMA is an interdisciplinary form of fighting using elements of Brazilian jiu-jitsu, judo, karate, boxing, kickboxing and wrestling. The fight scene between Donnie Yen and Collin Chou relies extensively on MMA, and is particularly thrilling and entertaining
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