日久见人心心心
[rì jiŭ jiàn rén xīn xīn xīn]
The literal meaning is 'time will reveal human intentions three times'. Derived from a Chinese proverb '日久见人心' (rì jiǔ jiàn rén xīn), which means only over time can you truly see one’s true colors. Repetition adds emphasis on how time indeed reveals true intention through various tests or scenarios.