[bǐng xìng]
natural disposition; natural instincts
be simple and honest by nature
禀性纯厚
be merciful and propitious by disposition
禀性慈祥
man of good nature
禀性善良的人
man of gentle disposition
禀性温和的人
Human nature is hardly changed.
禀性难移。
One's natural disposition is stupid.
禀性愚蒙。