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Jyutping zi4 zi1 zaa4 zaa4
Pinyin zhī zhī chā cha

Definitions (Kaifangcidian)
  1. 唧唧喳喳

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Jyutping zi1 zi1 zaa1 zaa1
Pinyin zhī zhī chā cha

Definitions (粵典–words.hk)
  1. 擬聲詞
    形容​人講​嘢​吵​雜​嘅​聲​音
    to describe the noise of human chatter

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Jyutping zi1 zi1 zaa1 zaa1
Pinyin zhī zhī zhā zhā

Definitions (CC-CANTO)
  1. describes someone who talks non-stop like a bird chirping
Definitions (Wiktionary)
  1. adv, onomatopoeic
    The sound of birds' chirpping.
  2. adv, onomatopoeic
    The sound of many people talking.