[勿忘国耻 / 勿忘國恥, wù wàng guó chǐㄨˋ ㄨㄤˋ ㄍㄨㄛˊ ㄔˇ] 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, See Also: 九一八事變, 九一八事变
[己所不欲,勿施于人 / 己所不慾,勿施於人, jǐ suǒ bù yù, wù shī yú rénㄐㄧˇ ㄙㄨㄛˇ ㄅㄨˋ ㄩˋ, ㄨˋ ㄕ ㄩˊ ㄖㄣˊ] What you don't want done to you, don't do to others. (成语 saw, from the Confucian analects); Do as you would be done by.; Do not do to others what you would not have them do to you.