天荒地老

tiānhuāngdìlǎo
(idiom) until the end of time

CEDICT

end of time; all eternity

Wiktionary

比喻时代的久远。唐．李贺〈致酒行〉：「吾闻马周昔作新丰客，天荒地老无人识。」《二刻拍桉惊奇．卷六》：「盖谓世间惟有愿得成双的，随你天荒地老，此情到底不泯也。」也作「地老天荒」。

重編國語辭典

Entry Composition

1 天 tiān
  1. day
  2. sky
  3. heaven
2 荒地 huāngdì
  1. wasteland
  2. uncultivated land
3 老 lǎo
  1. prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity
  2. old (of people)
  3. venerable (person)
  4. experienced
  5. of long standing
  6. always
  7. all the time
  8. of the past
  9. very
  10. outdated
  11. (of meat etc) tough