chū yū ní ér bù rǎn
lit. to grow out of the mud unsullied (idiom)
fig. to be principled and incorruptible
出
chū
variant of 出[chu1] (classifier for plays or chapters of classical novels)
淤
yū
silt
泥
ní
mud
而
ér
and
不
bù
no; not so
染
rǎn
to dye