Gyeoranggibeop
Technique number 5 is called gyeo-rang-gi-beop (겨랑기법). The name is a bit hard to translate. Gyeo-rang (겨랑) comes from Gyeo-deu-rang (겨드랑) which means armpit. At the end of the technique you flex and turn your opponent’s wrist, pointing his fingers to his armpit.