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