Meaning of lóu shàng:
lóu shàng
楼上
Noun
upstairs; (Internet slang) previous poster in a forum thread
Tāmen zhù zài wǒ jiā lóu shàng.
他们住在我家楼上。
They live upstairs from my house.
Wǒ wánquán tóngyì lóushàng de guāndiǎn.
我完全同意楼上的观点。
I completely agree with the previous poster's opinion.