夏爐冬扇 [－炉－－]

Jyutping haa6 lou4 dung1 sin3
Pinyin xià lú dōng shàn

Definitions (CC-CANTO)
  1. describes wasted and ineffective efforts when doing things not according to the needs; literally: stove in summer and fan in winter
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）