be a mortal malady
Serious trouble, Chinese idiom, Pinyin is x ī NF ù zh ò nghu à n, which means serious hidden danger or serious trouble of key departments. It comes from the biography of Wang Rong in the book of the Southern Qi Dynasty.
The origin of Idioms
In the book of the Southern Qi Dynasty, biography of Wang Rong: "it's hard for a vine to grow. If you drink in a trickle, it's hard for you to itch. It's a serious problem."
Idiom usage
As an object, it refers to the biggest hidden danger.
be a mortal malady
hands and eyes acting in coordination - shǒu huī mù sòng