After three days of separation, treat each other with admiration. shì bié sān rì, dāng guā mù xiāng dài
It means that even if we don’t see each other for three days, others have made progress, that is, we can no longer look at people with the same old eyes.
Source: "Three Kingdoms·Wu Zhi·Lu Meng Biography" annotated "Jiang Biao Biography": "After three days of separation, the scholars treated each other with admiration.
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