费难

tā xué guo mù jiang dǎ gè guì zi bìng bù fèi nán

他学过木匠，打个柜子并不费难。

He has learned carpentry, so making a cupboard should be easy for him.

ràng tā qù jiè shào jīng yàn tā kě fèi nán le

让他去介绍经验，他可费难了。

It's a challenge for him to talk about his experiences.