to have an irascible temperament
Pinch salt into fire is an idiom, the pronunciation is Cu ō y á NR ù Hu ǒ, which means that salt bursts as soon as it is put in the fire. It's a metaphor for being impatient.
source
Wang Shifu's "Romance of the Western Chamber" in Yuan Dynasty has a two fold discount of three books: "when you go, you're a lady with a little salt in the fire."
usage
The verb object type is used as the predicate to describe the impatient temperament
Examples
Because he is impatient, for the sake of the country, as long as he strives for courage and fight first, he is always called "vanguard". (Ming Shi Naian's "the Water Margin" Chapter 13) when nalocha heard the word "Monkey King", it was like ~, burning oil on the fire; all the bones were red and angry. "The monkey is here today!" he said (journey to the west, Chapter 59, by Wu Chengen of Ming Dynasty).
to have an irascible temperament
The scandal has spread far and wide - chǒu shēng yuǎn bō
Success is king, defeat is bandit - chéng zé wéi wáng ,bài zé wéi kòu
on every stick of wheat are growing two ears - mài xiù liǎng qí
close the door and stop sweeping the courtyard and tracks - bì guān què sǎo
dusty rice and dirty soup -- valueless things - chén fàn tú gēng
its loopholes appeared one after another - lòu dòng bǎi chū