以慎为键以慎為鍵

yǐ shèn wéi jiàn

Meaning

to take caution as the key (idiom); to proceed very carefully

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Characters

以yǐaccording to; so as to; because of; then人慎shèncautious, prudent忄真为wèito do, to act; to handle, to govern; to be丶力丶键jiànlock, door bolt; key钅建