[--]

Jyutping maang5 saang2
Pinyin měng xǐng

Definitions (Wiktionary)
  1. verb, literary
    to have a sudden flash of insight; to suddenly realize

猛省 [--]

Jyutping
Pinyin měng xǐng

Definitions (CC-CEDICT)
  1. to realize suddenly
  2. to suddenly recall