先代

xiāndài
  1. (literary) antiquity; ancient times
  2. (literary) forefathers; predecessors
  3. antiquity; ancient times
  4. forefathers; predecessors

Wiktionary

Entry Composition

=1 先 xiān
  1. beforehand; first; earlier
  2. at first; originally
  3. for the time being; for now
  4. (prefix) my late (in referring to deceased relatives older than oneself)
=1 先 xiǎn only used in 先馬／先马
2 代 dài
  1. to be a substitute for; to act on behalf of; to replace; to substitute
  2. generation; dynasty; age; period; (historical) era; (geological) eon