bù zhēng mán tou zhēng kǒu qì
not to be crushed (idiom)
to be determined to have one's revenge
不
bù
no; not so
蒸
zhēng
to evaporate
馒
mán
used in 饅頭|馒头[man2 tou5]
头
tou
suffix for nouns
争
to strive for
口
kǒu
mouth
气
qì
gas; air