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).
Chinese PinYin : cuō yán rù huǒ
to have an irascible temperament
to glance over things hurriedly. zǒu mǎ guān huā
be endowed with extraordinary talents. rú chuán dà bǐ
talent and insight far beyond the average person. cái shí guò rén