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Jyutping gaan2 ping3
Pinyin jiǎn pīn

Definitions (Wiktionary)
  1. noun
    "simple pinyin", an input method for Chinese that allows for abbreviated pinyin syllables, using the initial or first letter

簡拼 [简-]

Jyutping
Pinyin jiǎn pīn

Definitions (CC-CEDICT)
  1. (computing) input method where the user types just the initial or first letter of each syllable, e.g. "shq" or "sq" for 事情[shi4 qing5])