untidy appearance with prisoner 's unkempt hair and unwashed face
It is an idiom, pronounced Qi ú sh à us à ngmi à n, which means that a prisoner's head is not combed and his face is not washed.
explain
If you don't comb your head like a prisoner, if you don't wash your face like a funeral.
source
Song Suxun's on distinguishing traitors: "it's not true to talk about poetry when the prisoner's head is down." Young vagrants by Jiang Guangci 9: "the beggars in ragged clothes who are dead in prison - they represent the sorrow of the world and the misfortune of the world." See "face of the prisoner.".
Examples
The ragged Beggars - they represent the sorrow of the world and the misfortune of the world. Young vagrants by Jiang Guangci
usage
As a predicate or attribute; used of a person's appearance.
untidy appearance with prisoner 's unkempt hair and unwashed face
make impartial comments or statements - chí lùn gōng yǔn
A fool has a thousand worries, but he will get one - yú zhě qiān lǜ,bì yǒu yī dé