千秋万古

千秋萬古
qiānqiūwàngǔ

for eternity; generation after generation

Wiktionary

Entry Composition

1 千秋 qiānqiū
  1. a thousand years
  2. your birthday (honorific)
2 万古 wàngǔ
  1. (literary) aeons; eternity
  2. aeons; eternity