知其不可而為之 [－－－－－为－]

Jyutping zi1 kei4 bat1 ho2 ji4 wai4 zi1
Pinyin zhī qí bù kě ér wéi zhī

Definitions (Wiktionary)
  1. phrase, idiomatic
    Synonym of 知其不可而為／知其不可而为 (zhī qí bùkě ér wéi, “to (stubbornly) do something even though one knows it is impossible”).
    (syn.) 知其不可而为, 知其不可而為

知其不可而為之 [－－－－－为－]

Jyutping
Pinyin zhī qí bù kě ér wéi zhī

Definitions (CC-CEDICT)
  1. to keep going resolutely despite knowing the task is impossible (idiom)