Medial (ulnar) side of the first metacarpal (thumb)

Medial (ulnar) side of the carpals and the metacarpals

wàn gǔ yǔ zhǎng gǔ nèi cè 腕骨與手掌骨内側

Sān jiān yī

Three shoulder one 三肩(一)

Sān jiān èr

Three shoulder two 三肩(二)

Sān jiān sān

Three shoulder three 三肩(三)