路遥知马力，日久见人心
just as distance determines the stamina of a horse, so does time reveal a person's true heart (proverb)
Traditional: 路遙知馬力，日久見人心
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📖 Additional Information
English Phonetic:
'prɒvә:b
Detailed Definition:
n. a condensed but memorable saying embodying some important fact of experience that is taken as true by many people