wù​wàng​guó​chǐ

never forget national humiliation

Senses

勿忘国耻/ 勿忘國恥 wù​wàng​guó​chǐ never forget national humiliation

Common slogan urging people to never forget national humiliation, specifically referring to the 1931 Mukden Incident 九一八事变 jiǔ​yī​bā​shì​biàn and the subsequent Japanese invasion of Manchuria

References

see 勿忘国耻/勿忘國恥 九一八事变/九一八事變