coarse-grained
Not elegant, Chinese idiom, Pinyin is B ù D ē NGD à y ǎ, which means you can't get on the elegant hall. It is used to describe something that is not valued and "vulgar" (mostly literary works). From the story of heroes and Heroines: the first chapter of origin.
The origin of Idioms
Wen Kang's the first story of the origin of children's Heroes in the Qing Dynasty: "this comment was originally a novel that was not elegant. It was originally named" Jin Yu Yuan. "
Idiom usage
It's used as predicate and attributive; it's used as example for vulgar and low-grade things, but it doesn't appear elegant. Preface to Qu Qiubai's "random play"
coarse-grained
be struck by lightning and split into two halves - tiān dǎ léi pī
read hastily and without thinking - hú lún tūn zǎo
an important juncture of life and death - shēng sǐ guān tóu
be accustomed to normal order and live in favourable circumstances - ān cháng lǚ shùn