fēng mǎ niú bù xiāng jí
to be completely unrelated to one another (idiom)
irrelevant
风
fēng
wind
马
mǎ
abbr. for Malaysia 馬來西亞|马来西亚[Ma3 lai2 xi1 ya4]
牛
niú
ox
不
bù
no; not so
相
xiāng
each other
及
jí
and