왼쪽: 사람 亻, 오른쪽: 발표할 尃(능숙한 손 寸으로 지금 甫) Left: person 亻, right: announce 尃 (just now 甫 with skillful hand 寸) Here cf. shoulder 膊: Thus the body part 月/肉, that somehow looks like the upper body 甫 with shoulders 一 and the chest 月 with the 'skillful hand' 寸 are the shoulders.
니모닉
지금 능숙한 손놀림으로 발표하는 사람은 나의 선생님이다. That person with the (strong) shoulder and skillful hand is a qualified worker or a master.