光說不練 [－说－练]

Jyutping gwong1 syut3 bat1 lin6
Pinyin guāng shuō bù liàn

Definitions (CC-CEDICT)
  1. all talk and no action (idiom)
  2. to preach what one does not practice
  3. same as 光說不做|光说不做[guang1 shuo1 bu4 zuo4]