Valance, light and sword
This is a Chinese idiom, w é ID à ngxi á Ji à n in pinyin, which means that the truth is difficult to understand, which makes people suspicious. It's from Hua Yue Chen.
Idiom explanation
The lamp is covered with a curtain and the sword is hidden in a box. The metaphor is hard to understand and makes people suspicious.
Idioms and allusions
The 45th chapter of Hua Yue Chen written by Wei xiuren in Qing Dynasty: "the shadow of the cup, the snake, the bow, the devil, the man, the curtain, the lamp, the sword, the ghost are suspicious."
Analysis of Idioms
Near synonym: curtain lamp and sword
Idiom usage
Used as an object or attribute; used in writing
Valance, light and sword
To be a monk for one day and strike a clock for one day - zuò yī rì hé shàng zhuàng yī tiān zhōng
Wash one's hands and do one's duty - xǐ shǒu fèng zhí