bachelors and spinsters
The Chinese idiom is Ku à NGF à Yu à NN à, which means men and women who are old but still unmarried. It's from Mencius, King Liang Hui.
The origin of Idioms
"Mencius · Liang Hui Wang Xia": "there is no complaint woman inside, no Kuang Fu outside."
Idiom usage
The two of them met like a hungry tiger meets a sheep, and the black flies see blood. They had time to ask their names. (Yu Shi Ming Yan, Vol.23, by Feng Menglong of Ming Dynasty)
Analysis of Idioms
A lonely man and few women
Chinese PinYin : kuàng fū yuàn nǚ
bachelors and spinsters
hate to leave a place where one has lived long. ān tǔ zhòng jū
take care of every single thing personally. shì bì gōng qīn
act outrageously and ferociously. bà dào héng xíng
a great ability to rule the country. jīng guó zhī cái