Upon returning to Seoul Myung opened up a school in the Sansunkyo district .
Upon returning to Seoul Myung established the Korea Hapkido Yon Moo Kwan Association in April 1968 , dedicated to the furtherance of Hapkido as a highly visible martial art .
Upon returning to Seoul Myung opened up a school in the Sansunkyo district and established the Korea Hapkido Yon Moo Kwan Association in April 1968 , dedicated to the furtherance of Hapkido as a highly visible martial art .