人五人六 [－－－－]

Jyutping jan4 ng5 jan4 luk6
Pinyin rén wǔ rén liù

Definitions (CC-CEDICT)
  1. to make a show of being decent and proper
  2. to display phony or hypocritical behavior
Definitions (Wiktionary)
  1. adj, derogatory
    decent-looking; well-dressed