上古

shànggǔ
  1. the distant past
  2. ancient times
  3. antiquity
  4. early historical times

CEDICT

Entry Composition

1 上 shàng
  1. (bound form) up; upper; above; previous
  2. first (of multiple parts)
  3. to climb; to get onto; to go up
  4. to attend (class or university)
  5. (directional complement) up
  6. (noun suffix) on; above
2 古 gǔ
  1. ancient
  2. old
  3. paleo-