private secret
Private affairs in bed, a Chinese idiom, is Chu á ngz ǐ zh ī s ī in pinyin, which means private talk and private affairs in the boudoir or between couples. From "Zuo Zhuan · Xianggong 27suo" and "Kong Congzi · answering questions".
Idiom explanation
The first is the bamboo bed mat. Bed: bed. It refers to private talk and affairs in the boudoir or between couples.
The origin of Idioms
"Zuo Zhuan · Xianggong 27suo" said: "the words of bed do not exceed the threshold." According to Kong Congzi, a question and answer written by Qin Kongzi, it is not allowed to cover up the affairs in the room if Li Ji, the Marquis of the Jin Dynasty, has private affairs in her bed
Idiom usage
To be formal; to be an object; to be derogatory
private secret
get rid of the old to make way for the new - chú huì bù xīn
pestilential rain and unhealthy mist - zhàng yǔ mán yān
unable to suffer the humiliation made by the warder even if he is a whittled phoney one - xuē mù wéi lì