++CLIENTS PLEASE NOTE: THIS VIDEO HAS BEEN EDITED++ <br /><br />A martial artist in Vietnam had a concrete block thrown onto his arm, which emerges apparently unscathed.<br /><br />As part of a martial arts performance, the man has a concrete block thrown onto his arm, which is supported by a coconut with another concrete block below.<br /><br />His arm appears to withstand the blow, while the concrete block at the base is broken.<br /><br />The concrete block dropped onto his arm is said to weigh 20kg, although that was not independently verified.<br /><br />The extraordinary performance by the man, named as as Dinh Viet Dung, was filmed in Lang Son Province in March.
