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Jyutping waa6 seot6
Pinyin huà shù

Definitions (Wiktionary)
  1. noun
    script or wording used for a specific purpose (e.g. cold calling, sales, etc.)
  2. noun
    art of speaking

話術 [话术]

Jyutping
Pinyin huà shù

Definitions (CC-CEDICT)
  1. manipulative talk
  2. (sales) patter
  3. CL:套[tao4]