楊花水性 [杨－－－]

Jyutping joeng4 faa1 seoi2 sing3
Pinyin yáng huā shuǐ xìng

Definitions (Wiktionary)
  1. phrase, idiomatic, of a woman
    frivolous; fickle; lascivious
    (syn.) 水性杨花, 水性楊花