烈火干柴

烈火乾柴
lièhuǒgānchái
  1. lit. intense fire to dry wood (idiom); inferno in a woodpile
  2. fig. consuming passion between lovers

CEDICT

本指乾燥的柴薪易起火而勐烧。常比喻男女太过接近，易生欢爱之情。《二刻拍桉惊奇．卷一一》：「怎当得他每两下烈火乾柴，你贪我爱，各自有心，竟自勾搭上了。」《红楼梦．第六九回》：「真是一对烈火乾柴，如胶投漆，燕尔新婚，连日那裡拆得开。」也作「乾柴烈火」。

重編國語辭典

Entry Composition

1 烈火 lièhuǒ
  1. raging inferno
  2. blaze
=2 干 gān old variant of 干 gān
=2 干 gān
  1. dry
  2. dried food
  3. empty; hollow
  4. taken in to nominal kinship; adoptive; foster
  5. futile; in vain
  6. (dialect) rude; blunt
  7. (dialect) to cold-shoulder
=2 干 gān variant of 干 gān
=2 干 gān
  1. (bound form) to have to do with; to concern oneself with
  2. one of the ten heavenly stems 天干 tiāngān
  3. (archaic) shield
3 柴 chái
  1. firewood
  2. lean (of meat)
  3. thin (of a person)