Hide in the dark
It's a Chinese idiom, Pinyin y ù nd ú é RC á ng, hiding things in a cupboard. It's an old metaphor that Huai just retired.
Pinyin
yùndúércáng
explain
韫: it's hidden in the cupboard. Put the things in the cupboard and hide them. In the old days, it was metaphorical that my mind retired.
Classics
"The Analects of Confucius · Zihan": is there a beautiful jade in this place? When the king of Jin and Chu was employing people, the two generals had this magic arrow. When they heard about the king, the beautiful jade should not be hidden. ——The 58th chapter of Eastern Zhou Dynasty annals by Feng Menglong in Ming Dynasty
usage
It's a metaphor for huaicai.
Hide in the dark
expect the reality to correspond to the name - xún míng hé shí
cut off one 's country from the outside world - bì guān suǒ guó
there 's an opportunity to take advantage of - yǒu jī kě chéng