The expression "dog and horse", like the expression "dog and horse", generally refers to the lewd way of the old ruling class.

Sound, emotion, dog, horse, Chinese idiom, Pinyin means Shēng sèqu m m m m m m m m m m mm mm mm mm mm mm mm, which generally refers to the lewd way of the old ruling class. Also known as "colored dogs and horses", it comes from Strange Tales from a Lonely Studio: The Continuation of a Pipe.

The Origin and Interpretation of Idioms

Source: Qing Pu Songling's Strange Tales from a Lonely Studio: "The sound of dogs and horses is debauchery day and night, regardless of the national economy and people's livelihood."

Commentary: voice: singing and dancing; Color: female color; Dog: keep a dog; Horse: Riding a horse. Generally refers to the lewd way of the old ruling class. Also known as "color dog horse".

Baidu Encyclopedia-Sexy Dogs and Horses (China Idioms)