Incisive
It is an idiom with the pronunciation K è J ī K è g ǔ, which means to describe the deep feeling.
source
According to the list of poems written by Cao Zhi in the Wei Dynasty of the Three Kingdoms, it is said that "carving muscles and drawing bones, forcing people to think about crimes, eating in the daytime and sleeping in the night." In the biography of Fan Ye in the book of Song Dynasty, it is said that "the disaster has already been completed, but I still don't realize it. Only when I retreat and search for introspection, can I know how to make up for it."
Examples
It's a matter of fact. (Wu Jing, Tang Dynasty)
Incisive
check evidence of both parties at court - duì bù gōng táng