임맥 (CV)   >   CV18 옥당 (玉堂)
부위
앞가슴부위, 앞정중선(anterior median line) 위, 셋째 갈비사이공간(the 3rd intercostal space)과 같은 높이.

In the anterior thoracic region, at the same level as the 3rd intercostals space, on the anterior median line.
침구법
- 直刺 0.2～0.3寸
- 斜刺 0.3～0.5寸 (下方으로 향해 皮下를 沿해 刺入)