一回生，二回熟

一回生，二回熟

Literally means:

first time strangers, and second time friends

Actually means:

get to know each other by meeting

一回 refers to the first time and Erhui the second time.

The phrase means that two people find each other unfamiliar the first time they meet, but be come acquainted with each other when they meet again.

It indicates that people get familiar with each other after several meetings.

It is often used to emphasize that one should not be shy with strangers or used to encourage people to be sociable.

一回，第一次，二回，第二次。

一回生，二回熟，两个人第一次见面觉得生疏，第二次见面就开始熟悉了。

表示交往的次数多了，彼此就熟悉了。

常用来强调接触不熟悉的人时不要怕生，或用来鼓励人们多交往。