occupation oh se-lim
A joint lock is a ___MASK72___ technique involving manipulation of an opponent ' s joints in such a way that the joints reach their maximal degree of motion . Oh Se - Lim ( Hangul :  ) was an early Korean hapkido practitioner and a pioneer of the art . He had been the ___MASK37___ of the Korea Hapkido Federation for 18 years . A knife ( plural knives ) is a tool with a cutting edge or blade , hand - held or otherwise , with most having a handle . Some types of knives are used as utensils , including knives used at the dining table ( e . g ., butter knives and steak knives ) and knives used in the kitchen ( e . g ., paring knife , bread knife , cleaver ). Many types of knives are used as tools , such as the utility knife carried by soldiers , the pocket knife carried by hikers and the ___MASK76___ knife used by hunters . Knives are also used as a traditional or religious implement , such as the kirpan . Some types of knives are used as weapons , such as daggers or switchblades . Some types of knives are used as sports equipment ( e . g ., throwing knives ). Knives are also used in agriculture , food harvesting etc .; the sickle , the scythe and even the combine harvester are knives . Martial arts are codified systems and traditions of combat practices , which are practiced for a number of reasons : as self - defense , ___MASK36___ and law enforcement applications , mental and spiritual development ; as well as entertainment and the preservation of a nation ' s intangible cultural heritage . Korea is a historical state in East Asia , since 1945 divided into two distinct ___MASK31___ states : North Korea ( officially the " Democratic People ' s Republic of Korea ") and South Korea ( officially the " Republic of Korea "). Located on the Korean Peninsula , Korea is bordered by China to the northwest and Russia to the northeast . It is separated from Japan to the east by the Korea Strait and the East Sea . In modern times , nunchaku ( Tabak - Toyok ) were popularized by ___MASK12___ and ___MASK26___ Bruce Lee and his martial arts instructor Dan Inosanto , who introduced this weapon to the ___MASK12___ . Organizations including the North American Nunchaku Association , World Amateur Nunchaku Organization , Fédération Internationale de Nunchaku de Combat et Artistique , World Nunchaku Association , and International Techdo Nunchaku Association teach the use of nunchaku as a contact sport . Hapkido (, , also spelled hap ki do or hapki - do ) is a highly eclectic Korean martial art . It is a form of self - defense that employs joint locks , ___MASK72___ , and throwing techniques similar to those of other martial arts , as well as kicks , punches , and other striking attacks . It also teaches the use of traditional weapons , including knife , sword , rope , ssang juhl bong ( nunchaku ), cane ( ji pang ee ), short stick ( dan bong ), and middle - length staff ( joong bong , gun ( analogous to the Japanese j ), and b ( Japanese )), which vary in emphasis depending on the particular tradition examined . Japan (" Nippon " or " Nihon " ; formally "" or " Nihon - koku ", means " State of Japan ") is a ___MASK31___ island nation in Eastern Asia . Located in the Pacific Ocean , It is lying off the eastern coast of the Asia Mainland ( east of China , Korea , Russia ) and stretching from the Sea of Okhotsk in the north to the East China Sea and near Taiwan in the southwest . The Korea Hapkido Federation is the largest , wholly hapkido , governing body for the Korean martial art of hapkido in the world . It is made up of predominantly Korean born students and instructors or those individuals who have directly trained in South Korea . This organization is based in Seoul , South Korea and its ___MASK37___ is Kim , Jong - Yun . ___MASK72___ refers to techniques , maneuvers , and counters applied to an opponent in order to gain a physical advantage in hand - to - hand combat , such as improving relative position , escaping , submitting , or injury to the opponent . ___MASK72___ is a general term that covers techniques used in many disciplines , styles and martial arts that are practiced both as combat sports and for self - defense . ___MASK72___ most commonly does not include striking or the use of weapons . However , some fighting styles or martial arts known especially for their ___MASK72___ techniques teach tactics that include strikes and weapons either alongside ___MASK72___ or combined with it . South Korea , officially the Republic of Korea ( ROK ), is a ___MASK31___ state in East Asia , constituting the southern part of the Korean Peninsula .