隔靴搔癢 [－－－痒]

Jyutping gaak3 hoe1 sou1 joeng5
Pinyin gé xuē sāo yǎng

Definitions (CC-CEDICT)
  1. lit. to scratch the outside of the boot (idiom)
  2. fig. beside the point
  3. ineffectual
Definitions (粵典–words.hk)
  1. 語句
    講​嘢​或者​做​嘢​冇​重點​，​不切​實際
    (lit.) to scratch an itch that is under a boot; (fig.) the pointlessness of one's speech or deeds
    • 外行人學講內行話，總覺得係隔靴搔癢。
      外行人学讲内行话，总觉得系隔靴搔痒。
      It always comes to me as irritatingly pointless to hear amateurs using the insiders' language.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to attempt an ineffective solution
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (粵典–words.hk)
  1. Cantonese
    外行人学讲内行话，总觉得系隔靴搔痒。
    外行人學講內行話，總覺得係隔靴搔癢。
    • It always comes to me as irritatingly pointless to hear amateurs using the insiders' language.