穿小鞋 (chuān xiǎo xié)

The idiom "穿小鞋 (chuānxiǎoxié)" literally means "to wear small shoes." It comes from the metaphor of giving someone shoes that are too small, causing discomfort. Figuratively, it means "to sabotage" or "to make things difficult for someone," describing actions that intentionally obstruct or hinder another person's progress.

For example:

Tā zǒng shì gěi wǒ chuān xiǎo xié, ràng wǒ hěn kùn rǎo.
他总是给我穿小鞋，让我很困扰。
He always sabotages me, causing a lot of trouble.

Source:eChineseLearning