Today Miracle Mandarin will teach you a phrase: 碰钉子(pèng dīngzi, meet with a rebuff/a difficult position).
Let Miracle Mandarin tell you what does it mean.
“碰钉子(pèng dīngzi)” means someone is denounced or his requests is rejected. It also refers to someone meets with a difficult status. We can say“碰了钉子pèng le dīngzi”、“碰了个（大）钉子pèng le gè dà dīngzi”.“碰壁（pèngbì）”is a more formal usage.
We can say:
Xiànzài tā xīnqíng bù hǎo. rúguǒ qù gēn tā shuō zhè jiàn shì, kěndìng huì pèng dīngzi.
He is in bad mood now. If you go to talk with him about this thing, you must get reject.
So, do you get it? If you want to know more about Chinese language, welcome to Miracle Mandarin Chinese Language school.