three principles and five virtues (idiom) / the three rules (ruler guides subject, father guides son and husband guides wife) and five constant virtues of Confucianism (benevolence 仁, righteousness 義|义, propriety 禮|礼, wisdom 智 / and fidelity 信)
舍生取义
shě shēng qǔ yì
to give up life for righteousness (idiom, from Mencius) / to choose honor over life / would rather sacrifice one's life than one's principles
义正辞严
yì zhèng cí yán
to speak forcibly out of a sense of righteousness (idiom)
五常
wǔ cháng
five constant virtues of Confucianism, namely: benevolence 仁, righteousness 義|义, propriety 禮|礼, wisdom 智 / and fidelity 信 / five cardinal relationships of Confucianism (between ruler and subject, father and son, husband and wife, brothers, friends) / five phases of Chinese philosophy: water 水, fire 火, wood 木, metal 金, earth 土
重利轻义
zhòng lì qīng yì
to value material gain over righteousness
重义轻利
zhòng yì qīng lì
to value righteousness rather than material gain (idiom)