一回生两回熟
yī​huí​shēng​liǎng​huí​shú

strangers at first, friends the next time

  1. 一回 yī​huí numeral
    once
    one time; one occasion; once
  2. 生 shēng nounadjective
    unfamiliar
    unfamiliar; strange; unacquainted
  3. 两 兩 liǎng numeral
    two
    two; used before most measure words, with the number ten, or with large units like thousand or ten thousand; also used for things that come in pairs
  4. 回 huí measure word
    [times]
    (measure word) the number of occurrences of an event or action
  5. 熟 shú adjective
    familiar
    familiar; well-acquainted; well-known through frequent contact