反其道而行之 [－－－－－－]

Jyutping faan2 kei4 dou6 ji4 hang4 zi1
Pinyin fǎn qí dào ér xíng zhī

Definitions (CC-CEDICT)
  1. to do the very opposite
  2. to act in a diametrically opposite way
Definitions (Wiktionary)
  1. phrase, idiomatic
    to do just the opposite; to act in a diametrically opposite way
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）