People who don't have faith don't know what they can do-Confucius

says what they believe is impermanent, acts what they do is impermanent and faithful, and does everything they can, but if it is profitable, it can be described as a villain-Xunzi

believes in the land of five elements, has no position, has no fame, and water and Jin Mu are all waiting for the living-Zhu Xi

If someone is anxious about heaven. -(France) Balzac

A promise is a promise, a promise is a promise-China proverb

Be honest with people, and people will not deceive me; With honesty, nothing can be accomplished-(middle) Feng Yuxiang

Credit is both an intangible force and an intangible wealth-(Japan) Kōnosuke Matsushita

Conscience is the sentry in everyone's heart, and it is there to watch over us not to do anything illegal-(English) Mao Mu

Idiom about promise

Keep your word.