勿忘国耻 wù wàng guó chǐ

DEFINITIONS

  1. Never forget national humiliation, refers to Mukden railway incident of 18th September 1931 九一八事變|九一八事变 and subsequent Japanese annexation of Manchuria

CHARACTERS

勿 wù must not, do not; without, never
忘 wàng forget; neglect; miss, omit
国 guó nation, country, nation-state
耻 chǐ shame, humiliation; ashamed