Meaning of hòu mian:
hòu mian
后面
Noun
the back; the rear; the last bit; behind; near the end; at the back; later; afterwards
Wǒ zuò zài jiàoshì de hòumiàn.
我坐在教室的后面。
I sit at the back of the classroom.
Tā zhàn zài wǒ de hòumiàn.
他站在我的后面。
He is standing behind me.
Wǒmen kěyǐ hòumiàn zài shāngliáng xìjié.
我们可以后面再商量细节。
We can discuss the details later.