禀性

bǐng xìng cí xiáng

禀性慈祥

be merciful and propitious by disposition

bǐng xìng cán bào

禀性残暴

have brutal temperament

bǐng xìng chún pǔ

禀性纯朴

be born simple and plain

bǐng xìng yú méng

禀性愚蒙。

One's natural disposition is stupid.