mào tiān xià zhī dà bù wěi
see 冒大不韙|冒大不韪[mao4 da4 bu4 wei3]
冒
mào
old variant of 冒[mao4]
天
tiān
day
下
xià
down
之
zhī
(possessive particle, literary equivalent of 的[de5])
大
dà
big; large; great
不
bù
no; not so
韪
wěi
correct