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Jyutping sai3 faa3
Pinyin xì huà

Definitions (Wiktionary)
  1. verb, intransitive, transitive
    to go into full detail; to further specify; to refine

細化 [细-]

Jyutping
Pinyin xì huà

Definitions (CC-CEDICT)
  1. to give a more granular level of detail
  2. to elaborate
  3. to refine
  4. to become more differentiated