[--]

Jyutping zung1 seoi2
Pinyin zhōng shuǐ

Definitions (Wiktionary)
  1. noun
    gray water
    (syn.) 灰水

中水 [--]

Jyutping
Pinyin zhōng shuǐ

Definitions (CC-CEDICT)
  1. reclaimed water
  2. recycled water