An empty grain
Konggu Baiju, a Chinese idiom, Pinyin is k ō NGG ǔ B á ij ū, which means that talents cannot be employed. From the book of songs Xiaoya Baiju.
Idiom explanation
Foal: a stout horse. It's a good broken horse, but it's not used in the valley. Metaphor can't employ talents.
The origin of Idioms
[source] book of songs Xiaoya Baiju: "Jiaojiao Baiju, in the empty valley."
An empty grain
dress in the coarse hempen cloth black - pī má dài xiào
both the higher and lower levels find themselves in a predicament - shàng xià jiāo kùn