do not

strokes 4
strokes after radical 2
非诚勿扰 非誠勿擾 fei1 cheng2 wu4 rao3
serious inquiries only

苟富贵,勿相忘 苟富貴,勿相忘 gou3 fu4 gui4 - wu4 xiang1 wang4
don't forget your friends when you become rich

姑置勿论 姑置勿論 gu1 zhi4 wu4 lun4
to put something aside for the time being (idiom)

己所不欲,勿施于人 己所不欲,勿施於人 ji3 suo3 bu4 yu4 - wu4 shi1 yu2 ren2
What you don't want done to you, don't do to others. (idiom, 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.

宁缺勿滥 寧缺勿濫 ning4 que1 wu4 lan4
same as 寧缺毋濫|宁缺毋滥

宁左勿右 寧左勿右 ning4 zuo3 wu4 you4
(of one's political views) to prefer left rather than right (idiom during the Cultural Revolution)

切勿 切勿 qie4 wu4
by no means

请勿打扰 請勿打擾 qing3 wu4 da3 rao3
please do not disturb

请勿吸烟 請勿吸煙 qing3 wu4 xi1 yan1
No smoking; Please do not smoke

稍安勿躁 稍安勿躁 shao1 an1 wu4 zao4
variant of 少安毋躁

勿求人 勿求人 wu4 qiu2 ren2
see 不求人

勿忘国耻 勿忘國恥 wu4 wang4 guo2 chi3
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

勿忘我 勿忘我 wu4 wang4 wo3
forget-me-not, genus Myosotis (botany)