with a bear 's loin and a tiger 's back
Xiongyaohubei, a Chinese idiom, Pinyin is Xi ó ngy ā oh ǔ B è I, which means that the waist is as strong as a bear and the back is as broad as a tiger. It is used to describe a person's strong body. It's from "flying knife vs. arrow.".
Analysis of Idioms
A bear on the back of a tiger
Idiom usage
He is nine feet long, with black eyes and yellow back. The ninety seventh chapter of romance of the Three Kingdoms by Luo Guanzhong in Ming Dynasty
The origin of Idioms
"This guy is a hero. He's a dog with a donkey's back. Oh, he's a tiger with a bear's back."
with a bear 's loin and a tiger 's back
glare like a temple door god -- to be fierce of visage - jīn gāng nù mù