yī​huí​shēng'èr​huí​shú

strangers first, friends later

Senses

一回生,二回熟 yī​huí​shēng'èr​huí​shú strangers first, friends later

a proverb suggesting that while people may be strangers at their first meeting, they will become familiar and comfortable with each other by the second encounter

References

same_as 一回生两回熟/一回生兩回熟 一回生,二回熟/一回生,二回熟