人情世故

He felt people were contemptuous of his lack of sophistication.

他觉得人们看起他人情故。

He's very young and inexperienced, and doesn't know about the ways of the world.

他还很年轻, 又验, 得人情故。

She is unschooled in the way of the world.

她人情故；她丝毫炎凉。