at dead of night
It's a Chinese idiom. Pinyin is y è J ì NGG ē NGL á n, which means silent night. It comes from lianhuanji.
The origin of Idioms
The fourth fold of Yuan Wu Mingshi's serial stratagem: "now it's a man who is busy asking for the truth, but he's leaning against the door."
Idiom usage
As an object or attribute; late at night
Chinese PinYin : yè jìng gēng lán
at dead of night
The dike of a thousand miles is destroyed by the ant nest. qiān lǐ zhī dī,huǐ yú yǐ xué
lofty and brilliant discourse. chóng lùn hóng yì
like " cutting and grinding " stones -- to learn from each other. rú qiē rú cuō