pèng yī bí zi huī
lit. to have one's nose rubbed in the dirt
fig. to meet with a sharp rebuff
碰
pèng
old variant of 碰[peng4]
一
yī
one
鼻
bí
nose
子
zi
noun suffix, as in 椅子[yi3 zi5] "chair"
灰
huī
ash