pitch-dark
It's dark. It refers to the darkness of society.
Idioms and allusions
[source] Deng Xiaoping's several problems that must be solved in the current iron and steel industry: "some people make the cause of the party black and white, and you still wait for him to realize it. Can you wait?"
Discrimination of words
[example] "several problems that must be solved in the current iron and steel industry": "some people make the party's cause so much that you still wait for him to realize it. Can you wait?"
pitch-dark
be utterly devoid of conscience - sàng jìn tiān liáng
Cooked rice with uncooked rice - shēng mǐ zhǔ chéng shú fàn
The river is clear for three days - hé qīng sān rì
Riding a donkey and singing on the ba - qí lǘ yín bà shàng