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Jyutping siu2 sei3 hei2
Pinyin xiǎo sì xǐ

Definitions (CC-CANTO)
  1. junior 4 happiness, a term in the game "mahjong"
Definitions (粵典–words.hk)
  1. 名詞、術語
    麻雀​術語​;​麻雀​牌型​一種​,​要用​東​、​南​、​西​、​北​其中​三​隻​對​碰​,​剩低果​隻​做​眼​,​另加​任意​上​或​碰牌​一副
    Mahjong jargon; Little Wind Hand - a formation of 3 triplets(pongs) on any 3 of the 4 Wind tiles (East, South, West, North), the remaining one form a pair of eyes, adding 1 meld of Chow or Pong of any suit
Definitions (Wiktionary)
  1. noun
    a winning hand with melds of three wind tiles and a pair of the fourth wind tile