桃園結義 [－园结义]

Jyutping tou4 jyun4 git3 ji6
Pinyin táo yuán jié yì

Definitions (CC-CEDICT)
  1. to make a pact of brotherhood (from “Romance of the Three Kingdoms” 三國演義|三国演义[San1 guo2 Yan3 yi4]) (idiom)
Definitions (Wiktionary)
  1. phrase, idiomatic
    to become sworn brothers
    (syn.) 桃园三结义, 桃園三結義