Origin of idioms
Biography of Yu Yanchuan in the Later Han Dynasty: "Nature is simple and unpretentious." ?
Vernacular: "I am honest and simple, and I am not bound by trivial matters that have nothing to do with principles."
Idiom usage
Verb object, as predicate and attribute. ?
antonym
Caution:
Just too cautious and timid to let go.
Origin of idioms
"Huainanzi Human Training": "Sages are cautious." ?
Vernacular: "saints are also cautious about subtle things and don't do inappropriate things."
Idiom usage
As predicate, object, attribute and adverbial.
Refer to the above? Baidu Encyclopedia-Informal, Baidu Encyclopedia-Caution