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Jyutping lik6 sou3
Pinyin lì shù

Definitions (Wiktionary)
  1. noun, literary
    calendar system
  2. noun, literary
    orbits and cycles of the celestial bodies

曆數 [历数]

Jyutping
Pinyin lì shù

Definitions (CC-CEDICT)
  1. (literary) movements of celestial bodies
  2. destiny
  3. calendar system